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""" Реализация дескриптора с """
class Value :
""" Значение """
def __init__ ( self ) :
""" Конструктор класса """
self . amount : " float " = 0.0
def __get__ ( self , obj , obj_type ) - > " float " :
""" Возвращение значения """
return self . amount
def __set__ ( self , obj , value ) :
""" Присваивание значения """
self . amount = value - value * obj . commission
class Account :
""" Счет """
amount : " Value " = Value ( )
def __init__ ( self , commission ) :
""" Конструктор класса """
self . commission : " float " = commission
def __str__ ( self ) - > " str " :
""" Строковое представление класса """
return f " { self . commission } "
def __repr__ ( self ) - > " str " :
""" Строковое представление класса """
return f " Account( { self . commission } ) "