numpy.core.defchararray.index¶
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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.