Slice an iterator into chunks

slice_iterator.py

from itertools import islice
from typing import List, Iterator


def chunks(iterator: Iterator, step: int) -> List:
    """
    Yield successive step-sized chunks from iterator
    """
    iterable = iter(iterable)
    while True:
        lines = list(islice(i, step))
        if not lines:
            return
        yield lines
        
    # Another approach
    # iterable = iter(iterable)
    # yield from iter(lambda: list(islice(iterable, step)), [])

chunks([1,2,3,4,5], 2)
chunks(range(5), 2)
chunks('abcde', 2)