我有两个数据帧，
DF1，
Values
0 Sri
1 pyd
2 NaN
3 sri, is
4 keyboard
5 kumar,cricketer
DF2，
Values | Names
Sri | Sri is a good player
NaN | NaN
sri, is | Sri is a good player
kumar,cricketer | Kumar is a cricketer
我试图通过比较df1和df2来更新df1。 df1 [＆＃34;值＆＃34;]将有df2 [＆＃34;值＆＃34;]等等。如果df1和df2中存在一个值，那么我想在df1中映射相应的df2 [＆＃34; Names＆＃34;] [＆＃34; Names＆＃34;]
我想要的输出是
DF1，
Values | Names
0 Sri | Sri is a good player
1 pyd | NaN
2 NaN | NaN
3 sri, is | Sri is a good player
4 keyboard | NaN
5 kumar,cricketer | Kumar is a cricketer
提前致谢！