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Pull Request — main (#50)
by Peter
01:08
created

pyclean.compat.get_implementation()   A

↳ Parent: pyclean.compat

Complexity

Conditions 2

Size

Total Lines 19
Code Lines 11

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
cc 2
eloc 11
nop 1
dl 0
loc 19
rs 9.85
c 0
b 0
f 0
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"""
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Cross-Python version compatibility.
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"""
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import platform
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import sys
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from argparse import _AppendAction as AppendAction
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from importlib import import_module
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def get_implementation(override=None):

            


            
                                                                        
                            
            
                                    
            
            

                
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    """

            


            
                                                                        
                            
            
                                    
            
            

                
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    Detect the active Python version and return a reference to the

            


            
                                                                        
                            
            
                                    
            
            

                
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    module serving the version-specific pyclean implementation.

            


            
                                                                        
                            
            
                                    
            
            

                
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    """

            


            
                                                                        
                            
            
                                    
            
            

                
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    implementation = dict(

            


            
                                                                        
                            
            
                                    
            
            

                
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        CPython2='pyclean.py2clean',

            


            
                                                                        
                            
            
                                    
            
            

                
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        CPython3='pyclean.py3clean',

            


            
                                                                        
                            
            
                                    
            
            

                
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        PyPy2='pyclean.pypyclean',

            


            
                                                                        
                            
            
                                    
            
            

                
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        PyPy3='pyclean.pypyclean',

            


            
                                                                        
                            
            
                                    
            
            

                
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    )

            


            
                                                                        
                            
            
                                    
            
            

                
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    detected_version = '%s%s' % (

            


            
                                                                        
                            
            
                                    
            
            

                
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        platform.python_implementation(),

            


            
                                                                        
                            
            
                                    
            
            

                
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        sys.version[0],

            


            
                                                                        
                            
            
                                    
            
            

                
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    )

            


            
                                                                        
                            
            
                                    
            
            

                
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    module_name = implementation[override if override else detected_version]

            


            
                                                                        
                            
            
                                    
            
            

                
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    return import_module(module_name)

            


            
                                                                                                            
                            
            
                                    
            
            

                
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class ExtendAction(AppendAction):

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    """

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    Argparse "extend" action for Python < 3.8.

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    A simplified backport from the Python standard library.

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    """

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    def __call__(self, parser, namespace, values, option_string=None):

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        items = getattr(namespace, self.dest, None)

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        items = [] if items is None else items[:]

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        items.extend(values)

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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        setattr(namespace, self.dest, items)

            


            
                                                        
            
                                    
            
            

                
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