DataFrame中的行连接起来。...字典数据追加到数据帧
2.merge
merge可根据一个或多个键(列)相关同DataFrame中的拼接起来。...In [43]: pd.merge(left, right, on='B', how='outer', validate="one_to_many")
Out[44]:
A_x B A_y...In [52]: pd.merge(df1, df2, on='col1', how='outer', indicator=True)
Out[53]:
col1 col_left col_right...In [54]: pd.merge(df1, df2, on='col1', how='outer', indicator='辅助标识器')
Out[55]:
col1 col_left col_right