Pandas Convert Series From Datetimestamp To Datetime.datetime Object
I have a pandas' dataframe with a column that is of datatype: datetime64[ns]. How do I convert the whole series to a Python's Datetime.datetime objects? On the individual object
Solution 1:
If performance is a concern I would advise to use the following function to convert those columns to date_time
:
def lookup(s):
"""
This is an extremely fast approach to datetime parsing.
For large data, the same dates are often repeated. Rather than
re-parse these, we store all unique dates, parse them, and
use a lookup to convert all dates.
"""
dates = {date:pd.to_datetime(date) for date in s.unique()}
return s.apply(lambda v: dates[v])
to_datetime: 5799 ms
dateutil: 5162 ms
strptime: 1651 ms
manual: 242 ms
lookup: 32 ms
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