isplit -- Iterative split for Python strings.

example.py

import re


# Based on: https://stackoverflow.com/a/59071238/21784
def isplit(s, sep='\n'):
    sep = re.escape(sep)

    start = 0

    for m in re.finditer(sep, s):
        begin, end = m.span()
        if begin != start:
            yield s[start:begin]

        start = end

    remainder = s[start:]

    if remainder:
        yield remainder