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  1. class EnumParamName:
  2.     def __init__(self, namespace, name):
  3.         self.namespace = namespace
  4.         self.name = name
  5.  
  6.     def __setitem__(self, key, value):
  7.         self.namespace.setdefault('_annotations', {})[key.name] = self.name
  8.         self.namespace[self.name] = value
  9.  
  10. class EnumParamNamespace(dict):
  11.     def __getitem__(self, name):
  12.         if name in self:
  13.             return super().__getitem__(name)
  14.         return EnumParamName(self, name)
  15.  
  16. class EnumParamMeta(type):
  17.     @classmethod
  18.     def __prepare__(cls, name, bases):
  19.         return EnumParamNamespace()
  20.  
  21. class SearchType(metaclass=EnumParamMeta):
  22.     NAME = 'Name'
  23.     USER_ID [DEFAULT] = 'User ID'
  24.  
  25. print(SearchType.NAME)
  26. print(SearchType.USER_ID)
  27. print(SearchType._annotations['DEFAULT'])
Success #stdin #stdout 0.04s 9648KB
comments (?)
stdin 
Standard input is empty
stdout 
Name
User ID
USER_ID
https://ideone.com/s6cDzv
language:
Python 3 (python  3.12)
created:
2 years ago
visibility:
secret

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