RunLeapYear Speed Test

run_leap_year.py

def is_leap_year1(y):
    return (y % 4 == 0 and y % 100 != 0) or (y % 400 == 0)


def is_leap_year2(y):
    return (y % 400 == 0) or (y % 4 == 0 and y % 100 != 0)


def is_leap_year3(y):
    return (y % 4 == 0) and (y % 400 == 0 or y % 100 != 0)


def is_leap_year4(y):
    return (y % 4 == 0) and (y % 100 != 0 or y % 400 == 0)


def is_leap_year5(y):
    return (y % 100 != 0 or y % 400 == 0) and (y % 4 == 0)


def test(f):
    for i in xrange(1000, 2000):
        f(i)


if __name__ == "__main__":
    import time
    for idx, f in enumerate([is_leap_year1, is_leap_year2, is_leap_year3, is_leap_year4, is_leap_year5]):
        t = time.time()
        for i in xrange(10000):
            test(f)
        print idx, f.__name__, time.time() - t

"""
0 is_leap_year1 2.99913096428
1 is_leap_year2 3.19666790962
2 is_leap_year3 2.52836704254
3 is_leap_year4 2.25670194626
4 is_leap_year5 3.26516008377
"""