関連ワード:  python get first working day of month    python get first business day of month    python get first day of month    python get first day of month from date    python get first day of month between two dates    python first business day of month    python get first weekday of month    python get first and last day of month    python get first day of current month    python get first day of next month  
結果 : python get first working day of month