numpy.isnat¶

numpy.
isnat
(x, /, out=None, *, where=True, casting='same_kind', order='K', dtype=None, subok=True[, signature, extobj]) = <ufunc 'isnat'>¶ Test elementwise for NaT (not a time) and return result as a boolean array.
New in version 1.13.0.
Parameters:  x : array_like
Input array with datetime or timedelta data type.
 out : ndarray, None, or tuple of ndarray and None, optional
A location into which the result is stored. If provided, it must have a shape that the inputs broadcast to. If not provided or None, a freshlyallocated array is returned. A tuple (possible only as a keyword argument) must have length equal to the number of outputs.
 where : array_like, optional
This condition is broadcast over the input. At locations where the condition is True, the out array will be set to the ufunc result. Elsewhere, the out array will retain its original value. Note that if an uninitialized out array is created via the default
out=None
, locations within it where the condition is False will remain uninitialized. **kwargs
For other keywordonly arguments, see the ufunc docs.
Returns:  y : ndarray or bool
True where
x
is NaT, false otherwise. This is a scalar if x is a scalar.
Examples
>>> np.isnat(np.datetime64("NaT")) True >>> np.isnat(np.datetime64("20160101")) False >>> np.isnat(np.array(["NaT", "20160101"], dtype="datetime64[ns]")) array([ True, False])