只需添加到现有解决方案中，即可使用 inflect 创建动态字典

Just adding in to the existing solutions , you can use inflect to create dynamic dictionary

import inflect
p = inflect.engine()

df['Name'] += df.groupby('Name').cumcount().add(1).map(p.ordinal).radd('_')
print(df)

        Name  Age
0    Tom_1st   20
1    Tom_2nd   21
2   Jack_1st   19
3  Terry_1st   18