code: def deleter(self, func):
          
          if not callable(func):
              raise TypeError('deleter must be callable function')
          if hasattr(func, '__code__') and func.__code__.co_argcount != 1:
              raise TypeError('deleter must be a function with two arguments')
          if func.__name__ != self.name:
              raise TypeError('deleter function must have same name as getter')
          self._del_func = func
          return self
docs: Register a delete function for the DynamicProperty
  
          This function may only take one argument, self.