Pandas: Return Hour from Datetime Column Directly

Question

Assume I have a DataFrame sales of timestamp values:

timestamp               sales_office
2014-01-01 09:01:00     Cincinnati
2014-01-01 09:11:00         


        

Answer 1

Since the quickest, shortest answer is in a comment (from Jeff) and has a typo, here it is corrected and in full:

sales['time_hour'] = pd.DatetimeIndex(sales['timestamp']).hour