1>>> df = pd.DataFrame([[1, 2], [3, 4]], columns=list('AB'), index=['x', 'y'])
2>>> df
3 A B
4x 1 2
5y 3 4
6>>> df2 = pd.DataFrame([[5, 6], [7, 8]], columns=list('AB'), index=['x', 'y'])
7>>> df.append(df2, ignore_index=True)
8 A B
9x 1 2
10y 3 4
11x 5 6
12y 7 8
1# all_res is list of DataFrames : [ dataframe, dataframe, ... ]
2df_res = pd.concat(all_res)
1>>> df = pd.DataFrame([[1, 2], [3, 4]], columns=list('AB'))
2>>> df
3 A B
40 1 2
51 3 4
6>>> df2 = pd.DataFrame([[5, 6], [7, 8]], columns=list('AB'))
7>>> df.append(df2)
8 A B
90 1 2
101 3 4
110 5 6
121 7 8