code: def get_first_weekday_after(day, weekday):
          
          day_delta = (weekday - day.weekday()) % 7
          day = day + timedelta(days=day_delta)
          return day
docs: Get the first weekday after a given day. If the day is the same
          weekday, the same day will be returned.
  
          >>> # the first monday after Apr 1 2015
          >>> Calendar.get_first_weekday_after(date(2015, 4, 1), MON)
          datetime.date(2015, 4, 6)
  
          >>> # the first tuesday after Apr 14 2015
          >>> Calendar.get_first_weekday_after(date(2015, 4, 14), TUE)
          datetime.date(2015, 4, 14)