numpy.core.defchararray.index — NumPy v1.11 Manual (original) (raw)
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. |