date - Week Number for Actual Calendar Python -


can tell me how week number in python actual calendar. 

ex: 2016-01-01 2016-01-07 = week 1     2016-01-08 2016-01-14 = week 2

i tried 2 ways none of them working

  1. using isocalendar()

but not work year end , year start week. ex:

datetime.date(2016,01,01).isocalendar()[1] # should be: 1 # got 53
  1. is following:

 

dt = date(2016,01,02) d = strftime("%u", time.strptime(str(dt),"%y-%m-%d")) print d # 00   dt = date(2016,01,03) d = strftime("%u", time.strptime(str(dt),"%y-%m-%d")) print d # 01

both ways not satisfy requirement. there other library can use week number in actual calendar ?

are talking actual number of 7 day periods rather week number you're in? keep in mind in 2016, jan 3rd first day of second week.

if you're looking @ 7 day period, should count days since beginning of year , floor div 7

dt = datetime.datetime(year=2016, month=1, day=2) days = dt - datetime.datetime(year=dt.year, month=1, day=1).days weeks = days // 7 + 1

the 29th should first day of week 5. let's try it.

dt = datetime.datetime(year=2016, month=1, day=29) days = dt - datetime.datetime(year=dt.year, month=1, day=1).days weeks = days // 7 + 1 # 5

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