示例df1:
Week-Year Text 1
1-2019 a
2-2019 s
4-2019 d
df2:
Week-Year Text 2
1-2019 q
3-2019 w
4-2019 e
我希望我的数据框看起来像这样:
Week-Year Text 1 Text 2
1-2019 a q
2-2019 s nan
3-2019 nan w
4-2019 d e
请告诉我如何实现这一目标。