numpy.datetime_data

numpy.datetime_data(dtype, /)

Get information about the step size of a date or time type.

The returned tuple can be passed as the second argument of numpy.datetime64 and numpy.timedelta64.

Parameters

dtypedtype

The dtype object, which must be a datetime64 or timedelta64 type.

Returns

unitstr

The datetime unit on which this dtype is based.

countint

The number of base units in a step.

Examples

>>> dt_25s = np.dtype('timedelta64[25s]')
>>> np.datetime_data(dt_25s)
('s', 25)
>>> np.array(10, dt_25s).astype('timedelta64[s]')
array(250, dtype='timedelta64[s]')

The result can be used to construct a datetime that uses the same units as a timedelta

>>> np.datetime64('2010', np.datetime_data(dt_25s))
numpy.datetime64('2010-01-01T00:00:00','25s')

numpy.datetime_as_string numpy.busdaycalendar