iter_text_lines streaming for big files

"""Stream text files line by line so huge inputs never load into memory."""
from collections.abc import Iterator
from pathlib import Path


def iter_text_lines(
    path: str | Path,
    *,
    encoding: str = "utf-8",
    errors: str = "strict",
    skip_blank: bool = True,
) -> Iterator[str]:
    """Yield lines lazily, newline stripped, blank ones optional."""
    with open(path, "r", encoding=encoding, errors=errors) as handle:
        for raw in handle:
            line = raw.rstrip("\n").rstrip("\r")
            if skip_blank and not line.strip():
                continue
            yield line


if __name__ == "__main__":
    for number, line in enumerate(iter_text_lines(__file__), start=1):
        print(f"{number:03d}: {line[:60]}")