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benedict.core.flatten._flatten_item()   A
last analyzed

↳ Parent: benedict.core.flatten

Complexity

Conditions 4

Size

Total Lines 16
Code Lines 15

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
eloc 15
dl 0
loc 16
rs 9.65
c 0
b 0
f 0
cc 4
nop 4
1 
from benedict.core import clone
2 
from benedict.utils import type_util
3 

            


            
                                                                                                            
                            
            
                                    
            
            

                
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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 f"{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(

            


            
                                                                        
                            
            
                                    
            
            

                
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                value, base_dict=new_dict, base_key=new_key, separator=separator

            


            
                                                                        
                            
            
                                    
            
            

                
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            )

            


            
                                                                        
                            
            
                                    
            
            

                
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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(f"Invalid key: '{new_key}', key already in flatten dict.")

            


            
                                                                        
                            
            
                                    
            
            

                
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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, base_dict=new_dict, base_key="", separator=separator)

            


            
                                                        
            
                                    
            
            

                
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