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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def cached_getter(func):
 """Decorate a property by executing it at instatiation time and cache the result on the instance object."""

  @wraps(func)
  def wrapper(self):
    attribute = f'_{func.__name__}'
    value = getattr(self, attribute, None)
    if value is None:
      value = func(self)
      setattr(self, attribute, value)
    return value
  return wrapper