saturday_july_4th.py

# Calculate the years between 1900 and 2100 in which July 4th falls on a Saturday

import datetime
for year in range(1900,2101):
    dt = datetime.datetime(year, 7, 4)
    if dt.strftime('%w') == '6':
        print year ,

# Yields 1903 1908 1914 1925 1931 1936 1942 1953 1959 1964 1970 1981 1987 1992 1998
# 2009 2015 2020 2026 2037 2043 2048 2054 2065 2071 2076 2082 2093 2099