Python: How can I use variable from main file in module?

I have 2 files main.py and irc.py.
main.py

import irc
var = 1
func()

irc.py

def func():
    print var

When I try to run main.py I'm getting this error

NameError: global name 'var' is not defined

How to make it work?

@Edit
I thought there is a better solution but unfortunately the only one i found is to make another file and import it to both files
main.py

import irc
import another
another.var = 1
irc.func()

irc.py

import another
def func():
    print another.var

another.py

var = 0