在 Pandas 中获取具有最大值的行

Question

Have a df like that:有一个这样的 df：

I'd like to have a dataframe with only row with max date in it.我想要一个数据框，其中只有包含最大日期的行。 How can it be performed?如何执行？

Thanks!谢谢！

Answer 1

Find the most recent date:查找最近的日期：

recent_date = df['date'].max()

And then get the dataframe with the recent date:然后获取具有最近日期的数据框：

df[df['date'] == recent_date]

To get the row with Top n dates (say top 2 dates),要获得前 n 个日期的行（比如前 2 个日期），

top_2 = df['date'].nlargest(2)
df[df['date'].isin(top_2)]