Can someone explain this behaviour of python code

Question

Below is a piece of code. I expect in the first print statement to print 456 but it is printing 123. Can anyone help with the explanation of this?

Have a look at the code below.

class employee():

    __private_var = 123
    phone_number=3274687

    def __init__(self, phone):
        self.phone_number = phone

# Private Functions

    def get_private_func(self):
        return self.__private_var

    def set_private_func(self):
        self.__private_var = 1

class VIP(employee):

    phone_number=123456
    __private_var = 456


obj1 = employee(1312321)
obj2 = VIP(1312321)
#Unable to reassign new value to private variable
print (obj2.get_private_func())

#Able to reassign new value to private variable
obj2.set_private_func()
print (obj2.get_private_func())

print (obj1.get_private_func())

Expected results:

456
1
123

Got these results:

123
1
123

Answer 1

Class variable __private_var should be initialised as super(employee).__private_var not __private_var in VIP class.

Another approach:

class VIP(employee):
    __private_var = 456

    def get_private_func(self):
        return self.__private_var

Answer 2

这是私有变量的行为（即名称以 __ 开头的变量），使其不是私有的，它应该可以工作（在我的机器上工作）