code: def days_in_month(year, month):
      
  
      eom = _days_per_month[month - 1]
      if is_leap_year(year) and month == 2:
          eom += 1
  
      return eom
docs: returns number of days for the given year and month
  
      :param int year: calendar year
      :param int month: calendar month
      :return int: