class Foo:
def __init__(self, values = []):
self.values = values
print(Foo.__init__.__defaults__)
a = Foo()
a.values.append(1)
print(Foo.__init__.__defaults__)
Y2xhc3MgRm9vOgogICAgZGVmIF9faW5pdF9fKHNlbGYsIHZhbHVlcyA9IFtdKToKICAgICAgICBzZWxmLnZhbHVlcyA9IHZhbHVlcwogICAgICAgIApwcmludChGb28uX19pbml0X18uX19kZWZhdWx0c19fKQoKYSA9IEZvbygpCmEudmFsdWVzLmFwcGVuZCgxKQoKcHJpbnQoRm9vLl9faW5pdF9fLl9fZGVmYXVsdHNfXyk=