cal.py

import calendar

START_YEAR = 2012
END_YEAR = 2012
START_MONTH = 7
END_MONTH = 7

cal = calendar.Calendar()
result = ["&year=%d&month=%d&day=%d" % (year, month, day) \
         for year in range(START_YEAR, END_YEAR + 1) \
         for month in range(START_MONTH, END_MONTH+1) \
         for day in cal.itermonthdays(year, month) if day != 0]