我与熊猫试验,并与合并所面临的问题,铁熊猫合并不同datato dataframes实现特定的输出
打印DF
0 1 2
0 plot_title title1 title2
1 x_title x x
2 y_title Speed y
3 x_val0 xv0 NaN
4 x_val1 xv1 v1
5 exp1 3159.6 3200
6 exp2 2441.2 NaN
打印df_to合并
0 1
0 plot_title title
1 x_title x
2 y_title ro
3 x_val Nan
4 exp1 19
5 exp7 127
和我想实现
0 1 2 3
0 plot_title title1 title2 title
1 x_title x x x
2 y_title Speed y ro
3 x_val0 xv0 NaN NaN
4 x_val1 xv1 v1 NaN
5 exp1 3159.6 3200 19
6 exp2 2441.2 NaN Nan
7 exp7 NaN NaN 127
我该怎么做?谢谢。
UPDATE: jeanrjc答案后,我得到一个关键的错误
File "pandas/index.pyx", line 134, in pandas.index.IndexEngine.get_loc (pandas/index.c:3812)
File "pandas/index.pyx", line 156, in pandas.index.IndexEngine.get_loc (pandas/index.c:3749)
KeyError: '0',
,但如果我
DF2 = df.merge(df_to合并,如何= '外',left_on运行=“0”,right_on = 0)。我得到
上输出,DF2:
0 1 0 1
0 plot_title title1 plot_title title
1 x_title x x_title x
2 y_title Speed y_title ro
3 x_val0 xv0 x_val0 NaN
4 x_val1 xv1 x_val1 NaN
5 exp1 3159.6 exp1 19
6 exp2 2441.2 exp2 NaN
7 x_val NaN x_val Nan
8 exp7 NaN exp7 127
合并()将做到这一点。可能需要重新命名你的列中的2个后合并 – 2015-02-24 13:12:24
你可以扩大你的答案吗? – alohamaloha 2015-02-24 13:17:29