関連ワード:  python insert line at beginning of file    python add line at beginning of file    python insert line at top of file    python write line at end of file    python add line at end of file    python write line to beginning of file    python append line to beginning of file    python add new line at end of file    python add line to top of file    python append line to end of file  
結果 : python insert line at beginning of file