Convert pandas series to string and datetime object
Peter Otten
__peter__ at web.de
Thu Sep 21 16:39:34 EDT 2017
zljubisic at gmail.com wrote:
> I have sliced the pandas dataframe
>
> end_date = df[-1:]['end']
>
> type(end_date)
> Out[4]: pandas.core.series.Series
>
> end_date
> Out[3]:
> 48173 2017-09-20 04:47:59
> Name: end, dtype: datetime64[ns]
>
> 1. How to get rid of index value 48173 and get only "2017-09-20
04:47:59"
> string? I have to call REST API with "2017-09-20 04:47:59" as a parameter,
> so I have to get string from pandas datetime64 series.
> 2. How to get rid of index value 48173 and get only datetime object
> [something like datetime.datetime.strptime('2017-09-20 04:47:59',
> '%Y-%m-%d %H:%M:%S')]. Later I will have to check if '2017-09-20 04:47:59'
> < datetime.datetime(2017,1,9)
>
> How to do these conversions?
After a web search and some trial and error:
>>> d = pd.DataFrame([[1, datetime.datetime.now()], [2,
datetime.datetime.now()]], columns=["whatever", "end"])
>>> d
whatever end
0 1 2017-09-21 22:36:52.342757
1 2 2017-09-21 22:36:52.349973
[2 rows x 2 columns]
>>> d["end"].astype(datetime.datetime).values[-1]
datetime.datetime(2017, 9, 21, 22, 36, 52, 349973)
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