import datetime
def days_diff(a, b):
    result = datetime.date(b[0],b[1],b[2])-datetime.date(a[0],a[1],a[2])
    return abs(result.days)

if __name__ == "__main__":
    print("Example:")
    print(days_diff((1982, 4, 19), (1982, 4, 22)))

    # These "asserts" are used for self-checking and not for an auto-testing
    assert days_diff((1982, 4, 19), (1982, 4, 22)) == 3
    assert days_diff((2014, 1, 1), (2014, 8, 27)) == 238
    assert days_diff((2014, 8, 27), (2014, 1, 1)) == 238
    print("Coding complete? Click 'Check' to earn cool rewards!")