numpy.char.index#

char.index(a, sub, start=0, end=None)[source]#

Like find, but raises ValueError when the substring is not found.

Parameters:
aarray_like, with np.bytes_ or np.str_ dtype
subarray_like, with np.bytes_ or np.str_ dtype
start, endarray_like, with any integer dtype, optional
Returns:
outndarray

Output array of ints.

See also

find, str.index

Examples

>>> a = np.array(["Computer Science"])
>>> np.strings.index(a, "Science", start=0, end=None)
array([9])