如何基于pandas python中的特定列合并两个数据帧？

Question

我必须合并两个数据帧

DF1

company,standard
tata,A1
cts,A2
dell,A3

DF2

company,return
tata,71
dell,78
cts,27
hcl,23

我必须将两个数据帧作为一个数据帧.我需要输出像

company,standard,return
tata,A1,71
cts,A2,27
dell,A3,78

Answer 1

用途merge:

print (pd.merge(df1, df2, on='company'))

样品:

print (df1)
  company standard
0    tata       A1
1     cts       A2
2    dell       A3

print (df2)
  company  return
0    tata      71
1    dell      78
2     cts      27
3     hcl      23

print (pd.merge(df1, df2, on='company'))
  company standard  return
0    tata       A1      71
1     cts       A2      27
2    dell       A3      78

Answer 2

我想我们也可以使用

df1.merge(df2,on='Company')