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Push — master ( 7aa640...5058b2 )
by Konstantin
01:54
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ocrd_utils.deprecate.rename_kwargs()   A

↳ Parent: ocrd_utils.deprecate

Complexity

Conditions 4

Size

Total Lines 9
Code Lines 9

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
eloc 9
dl 0
loc 9
rs 9.95
c 0
b 0
f 0
cc 4
nop 3
1 
import functools
2 
import warnings
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"""

            


            
                                                                                                            
                            
            
                                    
            
            

                
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https://stackoverflow.com/questions/49802412/how-to-implement-deprecation-in-python-with-argument-alias

            


            
                                                                                                            
                            
            
                                    
            
            

                
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by user2357112 supports Monica

            


            
                                                                                                            
                            
            
                                    
            
            

                
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"""

            


            
                                                                                                            
                            
            
                                    
            
            

                
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def deprecated_alias(**aliases):

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    """

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    Deprecate a kwarg in favor of another kwarg

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    """

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    def deco(f):

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        @functools.wraps(f)

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        def wrapper(*args, **kwargs):

            


            
                                                                                                            
                            
            
                                    
            
            

                
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            rename_kwargs(f.__name__, kwargs, aliases)

            


            
                                                                                                            
                            
            
                                    
            
            

                
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            return f(*args, **kwargs)

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        return wrapper

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    return deco

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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def rename_kwargs(func_name, kwargs, aliases):

            


            
                                                        
            
                                    
            
            

                
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    for alias, new in aliases.items():

            


            
                                                        
            
                                    
            
            

                
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        if alias in kwargs:

            


            
                                                        
            
                                    
            
            

                
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            if new in kwargs:

            


            
                                                        
            
                                    
            
            

                
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                raise TypeError('{} received both {} and {}'.format(

            


            
                                                        
            
                                    
            
            

                
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                    func_name, alias, new))

            


            
                                                        
            
                                    
            
            

                
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            warnings.warn('{} is deprecated; use {}'.format(alias, new),

            


            
                                                        
            
                                    
            
            

                
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                          DeprecationWarning)

            


            
                                                        
            
                                    
            
            

                
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            kwargs[new] = kwargs.pop(alias)

            


            
                                                        
            
                                    
            
            

                
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