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