numpy.core.defchararray.index¶
-
numpy.core.defchararray.
index
(a, sub, start=0, end=None)[source]¶ Like
find
, but raises ValueError when the substring is not found.Calls str.index element-wise.
Parameters: - a : array_like of str or unicode
- sub : str or unicode
- start, end : int, optional
Returns: - out : ndarray
Output array of ints. Returns -1 if sub is not found.