How do I use global variables in python functions? [duplicate]

Answer 1

I've grappled with the same question / misunderstood what I wanted for a few days, and I think what you may be trying to accomplish is have a function output a result, that can be used after the function finishes running.

The way you can accomplish above is by using return "some result", and then assigning that to a variable after a function. Here's an example below:

#function
def test_f(x):
    y = x + 2
    return y

#execute function, and assign result as another variable
var = test_f(3)
#can use the output of test_f()!
print var      #returns 5
print var + 3  #returns 8