将 DateTimeIndex 列标题转换为日期

Question

I've got a dataframe which uses DateTimeIndex for column headings. These are currently displaying in the format 2021-05-01 00:00:00. How can I get rid of the "00:00:00"?

I've looked up a few similar questions here on SO and the general response is using.dt.date:

df.columns = df.columns.dt.date

but it gives the error AttributeError: 'DatetimeIndex' object has no attribute 'dt'.

Do I have something wrong or does.dt just not work for format of dates that I've got?

Answer 1

Use DatetimeIndex.date :

df.columns = df.columns.date

because .dt is used for working with columns ( Series ):

df['col'] = df['col'].dt.date

---

ser = ser.dt.date