numpy.core.defchararray.index¶

numpy.core.defchararray.index(a,sub,start=0,end=None)[source]¶

Likefind, but raisesValueError when the substring is not found.

Callsstr.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 ifsub is not found.

See also

find,str.find