import test2

class Test:
    def __init__(self):
        self.t = ""

def changeTest(n):
    t.t = n
    print('change from test1 is - ', n)

t = Test()

if __name__ == "__main__":
    t.t = "newnew"
    print('test', t.t)

    test2.newTest("new test 2")
    print('test 2', t.t)

import test1

def newTest(t):
    test1.t.t = t
    print('change to - ', t)
    test1.changeTest(t)

test newnew
change to -  new test 2
change from test1 is -  new test 2
test 2 newnew

class Test:
    def __init__(self):
        self.t = ""

    def changeTest(self, n):
        self.t = n
        print('change from test1 is -', n)