[Python] Python: change global variable from within another file

In my main class I use a global variable ADDRESS that is defined in another file called config.py. I want to change the value of ADDRESS from within my main class, by calling a function in config.py.

In my main class I have:

from config import ADDRESS, change_address
change_address("192.168.10.100")
print("new address " + ADDRESS)


In my config file I have the following:

ADDRESS = "0.0.0.0"

def change_address(address):
global ADDRESS
ADDRESS = address
print("changed address to: " + ADDRESS)


The print statement in my config file correctly prints the new address of 192.168.10.100. However, the print statement in my main class prints 0.0.0.0. What am I missing here?

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