The following code won’t be allowed in Java, but in python, it works fine: ```python class A: A = 3 def __init__(self): print(self.A) def p(self): print(self.A) self.A += 1 class B(A): def __init__(self): print(2) self.p() super().__init__() B() ``` How can I understand this? Will it be a problem?