// get rid of for/while in your python

recursion loop in python

#!/usr/bin/env python
# get rid of for/while in your python code!
def loop(givenF,a,b):
    if ( a >= 0 and b >= a) :
        givenF()
        a += 1
        loop(givenF,a,b)

def sayHello():
    print("say hello")

loop(sayHello,1,4)