How to access the parameter of one class in another?

I have 2 classes A and B. How can class B access parameters that are in class A?

It cannot directly access class members unless it has access to the object. Otherwise you might need to define static variables.

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How to give access to its object ? Please could you type a sample code?

Sure, here is a small example:

class A(object):
    def __init__(self, B):
        self.B = B
class B(object):
    def __init__(self):
        self.internal_attribute = 2.8
b = B()
a = A(b)
# 2.8
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