我有两个数据框
df1 =
actorID actorName
0 annie_potts Annie Potts
1 bill_farmer Bill Farmer
2 don_rickles Don Rickles
3 erik_von_detten Erik von Detten
4 greg-berg Greg Berg
df2 =
directorID directorName
0 john_lasseter John Lasseter
1 joe_johnston Joe Johnston
2 donald_petrie Donald Petrie
3 forest_whitaker Forest Whitaker
4 charles_shyer Charles Shyer
我理想的是这两个数据框的连接，例如pd.concat((df1, df2))：
actorID-directorID actorName-directorName
0 annie_potts Annie Potts
1 bill_farmer Bill Farmer
2 don_rickles Don Rickles
3 erik_von_detten Erik von Detten
4 greg-berg Greg Berg
5 john_lasseter John Lasseter
6 joe_johnston Joe Johnston
7 donald_petrie Donald Petrie
8 forest_whitaker Forest Whitaker
9 charles_shyer Charles Shyer
但是我希望有一种简单的方法来指定我想要加入df1.actorName和df2.directorName以及actorID / directorID。我怎么能这样做？