関連ワード:  python concatenate dataframes with different columns    python combine dataframes with different columns    python append dataframes with different columns    python merge dataframes with different column names    python join dataframes with different column names    python append two dataframes with different columns    python merge two dataframes with different columns    python pandas merge dataframes with different column names    python merge dataframe multiple columns    python append dataframe different column names  
結果 : python concatenate dataframes with different columns