array of YYYYMMDD for last week (Sunday to Saturday)

gistfile1.py

#!/usr/bin/python
import datetime
import calendar

def getLastWeekStamps(today=datetime.date.today()):
	"""Usage:
		getLastWeekStamps()
		getLastWeekStamps(datetime.date(2012, 1, 4))
	"""
	oneday = datetime.timedelta(days=1)
	latestSunday = today # patience, we'll roll calendar to that day
	while latestSunday.weekday() != calendar.SUNDAY:
		latestSunday -= oneday # told ya
	startDate = latestSunday - 7 * oneday
	results = []
	for i in range(7):
		stamp = (startDate + i * oneday).strftime('%Y%m%d')
		results.append(stamp)
	return results

if __name__ == '__main__':

	print('last week')
	print(getLastWeekStamps())

	today = datetime.date(2012, 1, 4)
	print("today impersonation to %s" % today)
	print(getLastWeekStamps(today))