# Loop structures can always be expressed as recursion

# Here's an example with a simple while loop:
def method():
    while condition:
        do_stuff()
    # return stuff

# And its recursive counterpart:
def method():
    if condition:
        do_stuff()
        method()
    # return stuff

# Same thing, but with a 'do-while' loop instead:
def method():
    while True:
        do_stuff()
        if not condition:
            break
    # return stuff

# And its recursive counterpart:
def method():
    do_stuff()
    if condition:
        method()
    else:
        # return stuff