I have a pandas DataFrame with dtype=numpy.datetime64
In the data I want to change
'2011-11-14T00:00:00.000000000'
to:
'2010-11-14T00:00:00.000000000'
or other year. Timedelta is not known, only year number to assign. this displays year in int
Dates_profit.iloc[50][stock].astype('datetime64[Y]').astype(int)+1970
but can't assign value.
Anyone know how to assign year to numpy.datetime64?