Simple Closure Example : nested function « Function « Python Tutorial

1. Python Tutorial
2. Function
3. nested function

def counter(start_at=0):
     count = [start_at]
     def incr():
         count[0] += 1
         return count[0]
     return incr

count = counter(5)
print count()
print count()
count2 = counter(100)
print count2()
print count()