Function return discarding changes

Question

So I have a file, main.py. The contents are such:

var = 0

def func():
    var = 1

def pr():
    func()
    print(var)

pr()

When run, this prints out 0 instead of my expected 1. Why and how can I get the changes in func() to stick?

You're facing a `scope` problem... Take a look here, it may be useful for you: http://stackoverflow.com/questions/291978/short-description-of-python-scoping-rules — dot.Py, Jul 18 '16 at 14:27

score 2 · Accepted Answer · answered Jul 18 '16 at 14:25

2

You do it like this by refering to var as a global in func():

var = 0

def func():
    global var
    var = 1

def pr():
    func()
    print(var)

pr()

answered Jul 18 '16 at 14:25

Ohumeronen

One forgets things from time to time ;-) Glad I could help. – Ohumeronen Jul 18 '16 at 14:28

1 Answers1