How to convert int64 to datetime in pandas

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How to convert int64 to datetime in pandas



I have a pandas dataframe that has a column of type int64 but this columns represets date, e.g. 20180501. I'd like to convert this column to datetime and I'm having the following code but it returns an error message


df['new_date'] = pd.to_datetime(df['old_date'].astype('str'), format = '%y%m%d')



I'm getting the following error message


ValueError: unconverted data remains: 0501



How can I fix my code?




1 Answer
1



You need a capital Y. See Python's strftime directives for a complete reference.


Y


df = pd.DataFrame({'old_date': [20180501, 20181230, 20181001]})

df['new_date'] = pd.to_datetime(df['old_date'].astype(str), format='%Y%m%d')

print(df)

old_date new_date
0 20180501 2018-05-01
1 20181230 2018-12-30
2 20181001 2018-10-01






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