Closures - Modifying variables closed over

gistfile1.py

#!/usr/bin/python3.2

def create_counter():
    i = 0
    def increment():
        nonlocal i  # this comes with python3; similar to the "global" keyword
        i = i + 1
        print(i)
    return increment

count = create_counter()

count()
count()
count()