Numpy structured array with datetime

numpy, python

Solution

You have to specify that the `datetime64` is in seconds when you create the array because the one you parse and try to assign is a `datetime64[s]`:

na_trades = np.zeros(2, dtype='datetime64[s],i4')
na_trades[0] = (np.datetime64('1971-01-01 00:00:00'), 0)

The error you get means that the `datetime64` object that you specified is not `same_kind` as the one you try to assing. You try to assign a seconds resolution one, and you created a different one when you constructed the array (by default I think it's nanoseconds).

Problem

Original source