numpy.char.find

char.find(a, sub, start=0, end=None)

For each element, return the lowest index in the string where substring sub is found, such that sub is contained in the range [start, end).

Parameters:

aarray_like, with StringDType, bytes_ or str_ dtype

subarray_like, with np.bytes_ or np.str_ dtype

The substring to search for.

start, endarray_like, with any integer dtype

The range to look in, interpreted as in slice notation.

Returns:

yndarray

Output array of ints

See also

str.find

Examples

>>> import numpy as np
>>> a = np.array(["NumPy is a Python library"])
>>> np.strings.find(a, "Python")
array([11])