関連ワード:  python get position of object in list    python get position of element in list    python get index of object in list    python get index of object in list by attribute    python find position of object in list    python get index of element in list    python find position of element in list    python find index of object in list    python get index of element in list if exists    python get index of element in list by value  
結果 : python get position of object in list