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                #! /usr/bin/env python  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                #  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                # Copyright (C) 2015-2016 Rich Lewis <[email protected]>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                # License: 3-clause BSD  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                """  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                ## skchem.core.conformer  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                Defining conformers in scikit-chem.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                """  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                import warnings  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                import rdkit.Chem  | 
            
                            
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                from rdkit.Chem.rdDepictor import Compute2DCoords  | 
            
                            
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                from rdkit.Chem.rdDistGeom import EmbedMolecule, EmbedMultipleConfs  | 
            
                            
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                import numpy as np  | 
            
                            
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                from .base import ChemicalObject, ChemicalObjectView  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class Conformer(rdkit.Chem.rdchem.Conformer, ChemicalObject):  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    """ Class representing a Conformer in scikit-chem. """  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    @property  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    def owner(self):  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        """ skchem.Mol: the owning molecule. """  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        from .mol import Mol  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return Mol.from_super(self.GetOwningMol())  | 
            
                            
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                    @property  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    def positions(self):  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        """ np.ndarray: the atom positions in the conformer.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        Note:  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            This is a copy of the data, not the data itself.  You cannot  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            allocate to a slice of this.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        """  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        # cant slice this array sadly.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return np.array([self.GetAtomPosition(i) for i in range(len(self))])  | 
            
                            
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                    @positions.setter  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    def positions(self, val):  | 
            
                            
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                        assert val.shape[0] == len(self), 'Positions must be given only for ' \  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                                          'atoms in the molecule.'  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        assert 1 < val.shape[1] <= 3, 'Positions must be 2 or 3 dimensional.'  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if val.shape[1] == 2:  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            val = np.hstack((val, np.zeros((len(val), 1))))  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self.Set3D(bool((val[:, 2] != 0).any()))  | 
            
                            
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                        return [self.SetAtomPosition(i, v) for i, v in enumerate(val)]  | 
            
                            
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                    @property  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    def centre_of_mass(self):  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        """ np.array: the centre of mass of the comformer. """  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        atomic_mass = self.owner.atoms.atomic_mass  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return atomic_mass.dot(self.positions) / atomic_mass.sum()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    @property  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    def geometric_centre(self):  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        """ np.array: the geometric centre of the conformer. """  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return self.positions.mean(axis=0)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    def centre_representation(self, centre_of_mass=True):  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        """ Centre representation to the center of mass.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        Args:  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            centre_of_mass (bool):  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                Whether to use the masses of atoms to calculate the centre of  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                mass, or just use the mean position coordinate.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        Returns:  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            Conformer  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        """  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if centre_of_mass:  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            self.positions -= self.centre_of_mass  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        else:  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            self.positions -= self.geometric_centre  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    def _inertia_tensor(self):  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        """ Calculate the inertia tensor. """  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        mass = self.owner.atoms.atomic_mass  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        pos = self.positions  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return np.array([[((pos[:, (i % 3) - 1] ** 2 +  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                            pos[:, (j % 3) - 2] ** 2 if (i == j)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                            else - pos[:, i] * pos[:, j]) * mass).sum()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                          for i in range(3)] for j in range(3)])  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    def align_with_principal_axes(self):  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        """ Align the reference frame with the principal axes of inertia. """  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        eig_val, eig_vects = np.linalg.eigh(self._inertia_tensor())  | 
            
                            
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                        self.positions = self.positions.dot(eig_vects)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    def canonicalize(self):  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        """ Center the reference frame at the centre of mass and """  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self.centre_representation(centre_of_mass=True)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self.align_with_principal_axes()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    @property  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    def id(self):  | 
            
                            
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                        """ The ID of the conformer. """  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                             1                          | 
                
                 | 
                        return self.GetId()  | 
            
                            
                    | 
                        
                     | 
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                     | 
                    
                                                                                                    
                        
                         
                                                                                        
                                                                                     
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                | 
                    127
                 | 
                                    
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                | 
                    128
                 | 
                                    
                             1                          | 
                
                 | 
                    @id.setter  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    129
                 | 
                                    
                                                     | 
                
                 | 
                    def id(self, value):  | 
            
                            
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                    130
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                | 
                    131
                 | 
                                    
                             1                          | 
                
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                        warnings.warn('Setting the conformer value directly ' | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    132
                 | 
                                    
                                                     | 
                
                 | 
                                      'may cause issues.', UserWarning)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    133
                 | 
                                    
                             1                          | 
                
                 | 
                        self.SetId(int(value))  | 
            
                            
                    | 
                        
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                | 
                    134
                 | 
                                    
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                | 
                    135
                 | 
                                    
                             1                          | 
                
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                    @property  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    136
                 | 
                                    
                                                     | 
                
                 | 
                    def is_3d(self):  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    137
                 | 
                                    
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                | 
                    138
                 | 
                                    
                                                     | 
                
                 | 
                        """ bool: whether the conformer is three dimensional. """  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    139
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                | 
                    140
                 | 
                                    
                             1                          | 
                
                 | 
                        return self.Is3D()  | 
            
                            
                    | 
                        
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                | 
                    141
                 | 
                                    
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                | 
                    142
                 | 
                                    
                             1                          | 
                
                 | 
                    @is_3d.setter  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    143
                 | 
                                    
                                                     | 
                
                 | 
                    def is_3d(self, val):  | 
            
                            
                    | 
                        
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                | 
                    144
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                | 
                    145
                 | 
                                    
                             1                          | 
                
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                        pos = self.positions  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    146
                 | 
                                    
                             1                          | 
                
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                        pos[:, 2] = 0  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    147
                 | 
                                    
                             1                          | 
                
                 | 
                        self.positions = pos  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
                | 
                    148
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                | 
                    149
                 | 
                                    
                             1                          | 
                
                 | 
                    def __len__(self):  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    150
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                | 
                    151
                 | 
                                    
                             1                          | 
                
                 | 
                        return self.GetNumAtoms()  | 
            
                            
                    | 
                        
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                | 
                    152
                 | 
                                    
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                | 
                    153
                 | 
                                    
                             1                          | 
                
                 | 
                    def __repr__(self):  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    154
                 | 
                                    
                             1                          | 
                
                 | 
                        return '<{klass} id="{id}" at {address}>'.format( | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    155
                 | 
                                    
                                                     | 
                
                 | 
                            klass=self.__class__.__name__,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    156
                 | 
                                    
                                                     | 
                
                 | 
                            id=self.GetId(),  | 
            
                            
                    | 
                        
                     | 
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                     | 
                    
                                                                                                    
                        
                         
                                                                                        
                                                                                     
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                | 
                    157
                 | 
                                    
                                                     | 
                
                 | 
                            address=hex(id(self)))  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    158
                 | 
                                    
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                | 
                    159
                 | 
                                    
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                | 
                    160
                 | 
                                    
                             1                          | 
                
                 | 
                class ConformerView(ChemicalObjectView):  | 
            
                            
                    | 
                        
                     | 
                     | 
                     | 
                    
                                                                                                    
                        
                         
                                                                                        
                                                                                     
                     | 
                
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    161
                 | 
                                    
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                | 
                    162
                 | 
                                    
                             1                          | 
                
                 | 
                    def __getitem__(self, index):  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    163
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    164
                 | 
                                    
                             1                          | 
                
                 | 
                        res = super(ConformerView, self).__getitem__(index)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    165
                 | 
                                    
                             1                          | 
                
                 | 
                        if res is None:  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    166
                 | 
                                    
                             1                          | 
                
                 | 
                            try:  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    167
                 | 
                                    
                             1                          | 
                
                 | 
                                return Conformer.from_super(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    168
                 | 
                                    
                                                     | 
                
                 | 
                                    self.owner.GetConformer(int(index)))  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    169
                 | 
                                    
                             1                          | 
                
                 | 
                            except ValueError:  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    170
                 | 
                                    
                             1                          | 
                
                 | 
                                raise IndexError(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    171
                 | 
                                    
                                                     | 
                
                 | 
                                        'Conformer id {} not available (choose one ' | 
            
                            
                    | 
                        
                     | 
                     | 
                     | 
                    
                                                                                                    
                        
                         
                                                                                        
                                                                                     
                     | 
                
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    172
                 | 
                                    
                                                     | 
                
                 | 
                                        'of {}).'.format(index, tuple(self.id))) | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    173
                 | 
                                    
                                                     | 
                
                 | 
                        else:  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    174
                 | 
                                    
                             1                          | 
                
                 | 
                            return res  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    175
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    176
                 | 
                                    
                             1                          | 
                
                 | 
                    def __setitem__(self, key, value):  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    177
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    178
                 | 
                                    
                             1                          | 
                
                 | 
                        assert isinstance(value, Conformer), 'Only `Conformer`s can be added.'  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    179
                 | 
                                    
                             1                          | 
                
                 | 
                        assert len(value) == len(self.owner.atoms), \  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    180
                 | 
                                    
                                                     | 
                
                 | 
                            '`Conformers` must have the same number of atoms as the `Mol`.'  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    181
                 | 
                                    
                             1                          | 
                
                 | 
                        self.owner.RemoveConformer(int(key))  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    182
                 | 
                                    
                             1                          | 
                
                 | 
                        with warnings.catch_warnings():  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    183
                 | 
                                    
                             1                          | 
                
                 | 
                            warnings.simplefilter('ignore') | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    184
                 | 
                                    
                             1                          | 
                
                 | 
                            value.id = key  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    185
                 | 
                                    
                             1                          | 
                
                 | 
                        self.owner.AddConformer(value)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    186
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    187
                 | 
                                    
                             1                          | 
                
                 | 
                    def __delitem__(self, key):  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    188
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    189
                 | 
                                    
                             1                          | 
                
                 | 
                        self.owner.RemoveConformer(key)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    190
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    191
                 | 
                                    
                             1                          | 
                
                 | 
                    def __iter__(self):  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    192
                 | 
                                    
                             1                          | 
                
                 | 
                        return ConformerIterator(self)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    193
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    194
                 | 
                                    
                             1                          | 
                
                 | 
                    def __len__(self):  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    195
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    196
                 | 
                                    
                             1                          | 
                
                 | 
                        return self.owner.GetNumConformers()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    197
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    198
                 | 
                                    
                             1                          | 
                
                 | 
                    def append(self, value):  | 
            
                            
                    | 
                        
                     | 
                     | 
                     | 
                    
                                                                                                    
                        
                         
                                                                                        
                                                                                     
                     | 
                
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    199
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    200
                 | 
                                    
                             1                          | 
                
                 | 
                        assert isinstance(value, rdkit.Chem.Conformer)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    201
                 | 
                                    
                             1                          | 
                
                 | 
                        self[max(self.id) + 1] = value  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    202
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    203
                 | 
                                    
                             1                          | 
                
                 | 
                    def append_2d(self, **kwargs):  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    204
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    205
                 | 
                                    
                                                     | 
                
                 | 
                        """ Append a 2D conformer. """  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    206
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    207
                 | 
                                    
                             1                          | 
                
                 | 
                        kwargs['clearConfs'] = False  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    208
                 | 
                                    
                             1                          | 
                
                 | 
                        Compute2DCoords(self.owner, **kwargs)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    209
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    210
                 | 
                                    
                             1                          | 
                
                 | 
                    def append_3d(self, n_conformers=1, **kwargs):  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    211
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    212
                 | 
                                    
                                                     | 
                
                 | 
                        """ Append (a) 3D conformer(s), roughly embedded but not optimized.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    213
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    214
                 | 
                                    
                                                     | 
                
                 | 
                        Args:  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    215
                 | 
                                    
                                                     | 
                
                 | 
                            n_conformers (int):  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    216
                 | 
                                    
                                                     | 
                
                 | 
                                The number of conformers to append.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    217
                 | 
                                    
                                                     | 
                
                 | 
                            Further kwargs are passed to `EmbedMultipleConfs`.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    218
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    219
                 | 
                                    
                                                     | 
                
                 | 
                        """  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    220
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    221
                 | 
                                    
                             1                          | 
                
                 | 
                        kwargs.setdefault('numConfs', n_conformers) | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    222
                 | 
                                    
                             1                          | 
                
                 | 
                        kwargs['clearConfs'] = False  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    223
                 | 
                                    
                             1                          | 
                
                 | 
                        EmbedMultipleConfs(self.owner, **kwargs)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    224
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    225
                 | 
                                    
                             1                          | 
                
                 | 
                    @property  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    226
                 | 
                                    
                                                     | 
                
                 | 
                    def positions(self):  | 
            
                            
                    | 
                        
                     | 
                     | 
                     | 
                    
                                                                                                    
                        
                         
                                                                                        
                                                                                     
                     | 
                
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    227
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    228
                 | 
                                    
                             1                          | 
                
                 | 
                        return np.array([conformer.positions for conformer in self])  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    229
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    230
                 | 
                                    
                             1                          | 
                
                 | 
                    @property  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    231
                 | 
                                    
                                                     | 
                
                 | 
                    def is_3d(self):  | 
            
                            
                    | 
                        
                     | 
                     | 
                     | 
                    
                                                                                                    
                        
                         
                                                                                        
                                                                                     
                     | 
                
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    232
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    233
                 | 
                                    
                             1                          | 
                
                 | 
                        return np.array([conformer.is_3d for conformer in self])  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    234
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    235
                 | 
                                    
                             1                          | 
                
                 | 
                    @property  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    236
                 | 
                                    
                                                     | 
                
                 | 
                    def id(self):  | 
            
                            
                    | 
                        
                     | 
                     | 
                     | 
                    
                                                                                                                                                        
                        
                         
                                                                                        
                                                                                            
                                                                                     
                     | 
                
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    237
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    238
                 | 
                                    
                             1                          | 
                
                 | 
                        return np.array([conf.GetId() for conf in self.owner.GetConformers()])  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    239
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    240
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    241
                 | 
                                    
                             1                          | 
                
                 | 
                class ConformerIterator(object):  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    242
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    243
                 | 
                                    
                                                     | 
                
                 | 
                    """  Iterator for chemical object views.  """  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    244
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    245
                 | 
                                    
                             1                          | 
                
                 | 
                    def __init__(self, view):  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    246
                 | 
                                    
                                                     | 
                
                 | 
                        """ Create an iterator from a chemical object view. """  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    247
                 | 
                                    
                             1                          | 
                
                 | 
                        self.view = view  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    248
                 | 
                                    
                             1                          | 
                
                 | 
                        self._ids = view.id  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    249
                 | 
                                    
                             1                          | 
                
                 | 
                        self._current = 0  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    250
                 | 
                                    
                             1                          | 
                
                 | 
                        self._high = len(view)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    251
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    252
                 | 
                                    
                             1                          | 
                
                 | 
                    def __next__(self):  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    253
                 | 
                                    
                             1                          | 
                
                 | 
                        if self._current >= self._high:  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    254
                 | 
                                    
                             1                          | 
                
                 | 
                            raise StopIteration  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    255
                 | 
                                    
                                                     | 
                
                 | 
                        else:  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    256
                 | 
                                    
                             1                          | 
                
                 | 
                            self._current += 1  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    257
                 | 
                                    
                             1                          | 
                
                 | 
                            return self.view[self._ids[self._current - 1]]  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    258
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    259
                 | 
                                    
                                                     | 
                
                 | 
                    # py2 compat  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
                | 
                    260
                 | 
                                    
                                                     | 
                
                 | 
                    next = __next__  | 
            
            
                                                        
            
                                    
            
            
                | 
                    261
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                        
This can be caused by one of the following:
1. Missing Dependencies
This error could indicate a configuration issue of Pylint. Make sure that your libraries are available by adding the necessary commands.
2. Missing __init__.py files
This error could also result from missing
__init__.pyfiles in your module folders. Make sure that you place one file in each sub-folder.