Pandas 如何将df1的值单元格列与df2的值单元格列进行比较？

如何将一个df的列值替换为通过与其他dataframe2的另一列进行比较而生成的值

例如：

df1

df2

这个想法是这样的：

如果df1['Country']==df2['Initial']：用df2['Name']中的值替换df1['Country']的值**

将df1转换为

df1

        Date        Country  City   Specie      count   min     max     median  variance
0       2020-10-08  AS       Vantaa pressure    11      1011.0  1014.0  1012.0  9.41
1       2020-10-08  DZ       Vantaa wind-speed  11      6.0     9.5     7.5     17.00
2       2020-10-08  DZ       Vantaa pm10        11      10.0    13.0    12.0    16.73
3x9

    Initial Name
0   AF      Afghanistan
1   AL      Albania
2   DZ      Algeria
3   AX      Aland Islands
4   AS      American Samoa
5x2

        Date        **Country**          City   Specie      count   min     max     median  variance
0       2020-10-08  **American Samoa**   Vantaa pressure    11      1011.0  1014.0  1012.0  9.41
1       2020-10-08  **Algeria**          Vantaa wind-speed  11      6.0     9.5     7.5     17.00
2       2020-10-08  **Algeria**          Vantaa pm10        11      10.0    13.0    12.0    16.73
3x9