Now we need to create the actual calendar. To get the actual calendar data, we need the calendar module's monthcalendar() method. This method takes two arguments: the year and the month of the desired calendar (both in integer form). It returns a list which contains lists of the dates of the month by week. So if we count the number of items in the returned value, we have the number of weeks in the given month.
month = calendar.monthcalendar(current_yr, current_no)
nweeks = len(month)