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  1. # your code goes here
  2. from datetime import date, timedelta
  3.  
  4. def getLastWed(d):
  5. 	if d.isoweekday() >= 3:
  6. 		delta = d.isoweekday() - 3
  7. 	else:
  8. 		delta = d.isoweekday() + 7 - 3
  9. 	return d - timedelta(days=delta)
  10.  
  11. def getLast3WedInMonth(d):
  12. 	weeknum = d.isocalendar()[1]
  13. 	startWeeknum = date(d.year, d.month, 1).isocalendar()[1]
  14. 	if d.isoweekday() >= 3:
  15. 		thisWed = getLastWed(d)
  16. 		lastWed = getLastWed(thisWed - timedelta(days=1))
  17. 		last2Wed = getLastWed(lastWed - timedelta(days=1))
  18. 	else:
  19. 		thisWed = getLastWed(d)
  20. 		lastWed = thisWed
  21. 		last2Wed = getLastWed(lastWed - timedelta(days=1))
  22.  
  23. 	return list(filter(lambda x: x["weeknumber"] >= startWeeknum, 
  24. 	    [
  25. 			{"weeknumber": weeknum-2, 'date': last2Wed},
  26. 			{"weeknumber": weeknum-1, 'date': lastWed},
  27. 			{"weeknumber": weeknum, 'date': thisWed}
  28. 		]))
  29.  
  30. print(getLast3WedInMonth(date.today()))
  31. print(getLast3WedInMonth(date(2019, 9, 11)))
  32. print(getLast3WedInMonth(date(2019, 9, 10)))
  33. print(getLast3WedInMonth(date(2019, 9, 4)))
  34.  
Success #stdin #stdout 0.02s 9396KB
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[{'weeknumber': 35, 'date': datetime.date(2019, 8, 28)}, {'weeknumber': 36, 'date': datetime.date(2019, 9, 4)}, {'weeknumber': 37, 'date': datetime.date(2019, 9, 11)}]
[{'weeknumber': 35, 'date': datetime.date(2019, 8, 28)}, {'weeknumber': 36, 'date': datetime.date(2019, 9, 4)}, {'weeknumber': 37, 'date': datetime.date(2019, 9, 11)}]
[{'weeknumber': 35, 'date': datetime.date(2019, 8, 28)}, {'weeknumber': 36, 'date': datetime.date(2019, 9, 4)}, {'weeknumber': 37, 'date': datetime.date(2019, 9, 4)}]
[{'weeknumber': 35, 'date': datetime.date(2019, 8, 28)}, {'weeknumber': 36, 'date': datetime.date(2019, 9, 4)}]
https://ideone.com/0j03Hd
language:
Python 3 (python  3.9.5)
created:
4 years ago
visibility:
public

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