関連ワード:  dataframe add a column with same value    pandas add a column with same value    pandas add a column with same value for all rows    pandas dataframe add a column with same value    dataframe add a new column with same value    python dataframe add a column with same value    dataframe add one column with same value    dataframe add column with one value    pandas add column with same value in every row    pandas add new column with same value  
結果 : dataframe add a column with same value