如何将 datetime.time 转换为 datetime.date

Question

I have a dataframe called pomi that looks like this

date time sub 
2019-09-20 00:00:00 25.0 org

I want to convert the values in the column 'date' to datetime.date, so that I'm left with only the dates (ie '2019-09-20').

I have tried:

pomi['date'] = pd.to_datetime(pomi['date'])

pomi['just_date'] = pomi['date'].dt.date

pomi.date = pd.to_datetime(pomi.date,dayfirst=True)

pomi['date'] = pd.to_datetime(pomi["date"].astype(str)).dt.time

pomi['date'] = pd.to_datetime(pomi['date']).dt.date

pomi['date'] = pd.to_datetime(pomi['date']).dt.normalize()

None of them have worked.

Most often I get the error message "TypeError: <class 'datetime.time'> is not convertible to datetime"

All help appreciated. Thanks.

Answer 1

Full disclosure, I am not 100% sure what is the issue, your code was working fine at my end. But there is something you can try as convert to Timestamp & than check. This & your code both works at my end giving required out.

import pandas as pd

df = pd.DataFrame({'date': ['2019-09-20 00:00:00'], 'time':[25], 'sub':['org']})

df['date'] = df['date'].apply(pd.Timestamp)

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

df