http://www.sharejs.com/codes/python/8032
import datetime
# Get a date object
today = datetime.date.today()
# General functions
print "Year: %d" % today.year
print "Month: %d" % today.month
print "Day: %d" % today.day
print "Weekday: %d" % today.weekday() # Day of week Monday = 0, Sunday = 6
# ISO Functions
print "ISO Weekday: %d" % today.isoweekday() # Day of week Monday = 1, Sunday = 7
print "ISO Format: %s" % today.isoformat() # YYYY-MM-DD format
print "ISO Calendar: %s" % str(today.isocalendar()) # Tuple of (ISO year, ISO week number, ISO weekday)
# Formatted date
print today.strftime("%Y/%m/%d") #
#该代码片段来自于: http://www.sharejs.com/codes/python/8032