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  1. class at_time:
  2.     actions = {}
  3.  
  4.     def __init__(self, time_of_day):
  5.         self.time_of_day = time_of_day
  6.  
  7.     def __call__(self, func):
  8.         self.actions.setdefault(func.__qualname__, {})[self.time_of_day] = func
  9.         return self
  10.  
  11.     def __set_name__(self, owner, name):
  12.         self.name = name
  13.  
  14.     def __get__(self, obj, objtype):
  15.         def wrapper(time_of_day):
  16.             for cls in objtype.__mro__:
  17.                 if func := self.actions.get(
  18.                     '.'.join((cls.__qualname__, self.name)), {}).get(time_of_day):
  19.                     return func(obj)
  20.             raise ValueError(f'No {self.name} found in the {time_of_day} time')
  21.         return wrapper
  22.  
  23. class PersonalChef():
  24.     @at_time('morning')
  25.     def cook(self):
  26.         print("Cooking breakfast")
  27.  
  28.     @at_time('evening')
  29.     def cook(self):
  30.         print("Cooking dinner")
  31.  
  32. class PersonalChefUK(PersonalChef):
  33.     @at_time('evening')
  34.     def cook(self):
  35.         print("Cooking supper")
  36.  
  37. PersonalChef().cook('morning')
  38. PersonalChef().cook('evening')
  39. PersonalChefUK().cook('morning')
  40. PersonalChefUK().cook('evening')
Success #stdin #stdout 0.04s 9512KB
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Cooking breakfast
Cooking dinner
Cooking breakfast
Cooking supper
https://ideone.com/XQEBkK
language:
Python 3 (python  3.12)
created:
1 year ago
visibility:
secret

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