[table_trim()] #fn #snippet

table_trim_fn.py

from itertools import islice
from typing import Iterable, List, Optional, Sequence

def table_trim(tbl: Iterable[List], max_rows: Optional[int], max_cols: Optional[int]) -> Sequence[List[str]]:
    if max_rows is not None:
        tbl = islice(tbl, max_rows)
    if max_cols is not None:
        tbl = (row[:max_cols] for row in tbl)
    return tbl