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Change the first day of the week
Returns the current setting for the weekday that starts each week
Returns True if year is a leap year; otherwise, False
Returns the total number of leap days in the years within range
Returns a list of lists of ints. Each sublist denotes a week.
Returns two integers. the first one is the code of the weekday for the first day of the month month in year year; the second one is the number of days in the month.
Converting tupletime to floating-point number of seconds since the epoch
Returns the weekday code for the given date