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benedict.core.flatten._flatten_item()   A

↳ Parent: benedict.core.flatten

Complexity

Conditions 4

Size

Total Lines 19
Code Lines 19

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
eloc 19
dl 0
loc 19
rs 9.45
c 0
b 0
f 0
cc 4
nop 4
1 
# -*- coding: utf-8 -*-
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from benedict.core import clone

            


            
                                                                                                            
                            
            
                                    
            
            

                
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from benedict.utils import type_util

            


            
                                                                                                            
                            
            
                                    
            
            

                
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def _flatten_key(base_key, key, separator):

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    if base_key and separator:

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        return '{}{}{}'.format(base_key, separator, key)

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    return key

            


            
                                                                                                            
                            
            
                                    
            
            

                
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def _flatten_item(d, base_dict, base_key, separator):

            


            
                                                                        
                            
            
                                    
            
            

                
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    new_dict = base_dict

            


            
                                                                        
                            
            
                                    
            
            

                
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    keys = list(d.keys())

            


            
                                                                        
                            
            
                                    
            
            

                
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    for key in keys:

            


            
                                                                        
                            
            
                                    
            
            

                
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        new_key = _flatten_key(base_key, key, separator)

            


            
                                                                        
                            
            
                                    
            
            

                
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        value = d.get(key, None)

            


            
                                                                        
                            
            
                                    
            
            

                
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        if type_util.is_dict(value):

            


            
                                                                        
                            
            
                                    
            
            

                
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            new_value = _flatten_item(value,

            


            
                                                                        
                            
            
                                    
            
            

                
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                                      base_dict=new_dict,

            


            
                                                                        
                            
            
                                    
            
            

                
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                                      base_key=new_key,

            


            
                                                                        
                            
            
                                    
            
            

                
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                                      separator=separator)

            


            
                                                                        
                            
            
                                    
            
            

                
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            new_dict.update(new_value)

            


            
                                                                        
                            
            
                                    
            
            

                
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            continue

            


            
                                                                        
                            
            
                                    
            
            

                
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        if new_key in new_dict:

            


            
                                                                        
                            
            
                                    
            
            

                
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            raise KeyError(

            


            
                                                                        
                            
            
                                    
            
            

                
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                'Invalid key: "{}", key already in flatten dict.'.format(

            


            
                                                                        
                            
            
                                    
            
            

                
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                    new_key))

            


            
                                                                        
                            
            
                                    
            
            

                
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        new_dict[new_key] = value

            


            
                                                                        
                            
            
                                    
            
            

                
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    return new_dict

            


            
                                                                                                            
                            
            
                                    
            
            

                
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def flatten(d, separator='_'):

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    new_dict = clone(d, empty=True)

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    return _flatten_item(d,

            


            
                                                                                                            
                            
            
                                    
            
            

                
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                         base_dict=new_dict,

            


            
                                                                                                            
                            
            
                                    
            
            

                
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                         base_key='',

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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                         separator=separator)

            


            
                                                        
            
                                    
            
            

                
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