class MyClass:
def __init__(self, *, a=1, b=2, c=3):
self.a = a
self.b = b
self.c = c
class MyChildClass(MyClass):
def __init__(self, *, d=4, e=5, **kwargs):
super().__init__(**kwargs)
self.d = d
self.e = e
print(MyClass(3).a)
Y2xhc3MgTXlDbGFzczoKICAgIGRlZiBfX2luaXRfXyhzZWxmLCAqLCBhPTEsIGI9MiwgYz0zKToKICAgICAgICBzZWxmLmEgPSBhCiAgICAgICAgc2VsZi5iID0gYgogICAgICAgIHNlbGYuYyA9IGMKCmNsYXNzIE15Q2hpbGRDbGFzcyhNeUNsYXNzKToKICAgIGRlZiBfX2luaXRfXyhzZWxmLCAqLCBkPTQsIGU9NSwgKiprd2FyZ3MpOgogICAgICAgIHN1cGVyKCkuX19pbml0X18oKiprd2FyZ3MpCiAgICAgICAgc2VsZi5kID0gZAogICAgICAgIHNlbGYuZSA9IGUKCnByaW50KE15Q2xhc3MoMykuYSk=