Python Pandas date_range

Question

dateindex = pd.date_range(pd.datetime.today(), periods=4, freq='W', dtype='datetime64[ns]')

to generate some dates.

Can I get something like this to generate dates in the past. I tried -4 but no joy.

Cheers Kevin

do you want to generate four weeks of dates starting with today starting at midnight — ListenSoftware Louise Ai Agent
– ListenSoftware Louise Ai Agent, Commented Mar 26, 2021 at 14:12

Vaishali · Accepted Answer · 2017-09-05 20:19:00Z

1

In date_range 2 of start, end, periods should be specified. It assumes your date to be start, unless you specify otherwise.

pd.date_range(end = pd.datetime.today(), periods=4, freq='W', dtype='datetime64[ns]')

You get

DatetimeIndex(['2017-08-13 13:18:39.525080', '2017-08-20 13:18:39.525080',
           '2017-08-27 13:18:39.525080', '2017-09-03 13:18:39.525080'],
          dtype='datetime64[ns]', freq='W-SUN')

answered Sep 5, 2017 at 20:19

Vaishali

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