converting a pandas date to week number

Question

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 i

Answer 1

Just access the dt week attribute:

In [286]:
df['Date'].dt.week

Out[286]:
0    25
dtype: int64

In [287]:
df['Week_Number'] = df['Date'].dt.week
df

Out[287]:
        Date  Week_Number
0 2015-06-17           25