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I would like to extract a week number from data in a pandas dataframe.

The date format is datetime64[ns]

I have normalized the date to remove the time from it

df['Date'] = df['Date'].apply(pd.datetools.normalize_date)

so the date now looks like - 2015-06-17 in the data frame column

and now I like to convert that to a week number.

Thanks in advance

1 Answer

0 votes
by (108k points)

You just have to access the dt week attribute:

In [286]:



0    25

dtype: int64

In [287]:

df['Week_Number'] = df['Date'].dt.week



        Date  Week_Number

0 2015-06-17           25

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