numpy.char.index#
- char.index(a, sub, start=0, end=None)[source]#
Like
find
, but raisesValueError
when the substring is not found.Calls
str.index
element-wise.- Parameters:
- aarray_like of str or unicode
- substr or unicode
- start, endint, optional
- Returns:
- outndarray
Output array of ints. Returns -1 if sub is not found.
Examples
>>> a = np.array(["Computer Science"]) >>> np.char.index(a, "Science", start=0, end=None) array([9])