"""
This file is an example of ....
"""

def foo(n):
    for i in range(n):
        print i
    return i

def f2(v):
    v[0] = 0
    print v

m = 0
def f3(x):
    print x
    global m
    m = 5


def add(x, y):
    """
    This function (incorrectly!) adds together
    x and y.
    """
    return x + y^2   # this is wrong

def g():
    return 5/4