Ignore MyPy errors by adding ignore comments using sed

mypy_ignore_problems.py

import re
import subprocess  # nosec
from typing import Callable, List


def uniq(arr: List[str]):
    d = {}
    for item in arr:
        d[f"{item[0]}:{item[1]}"] = item[2]

    return d


def cut(item: str, slicer: Callable, delim=":"):
    filename = item.split(delim)[slicer]  # type: ignore[call-overload]
    try:
        ignore_type = re.findall("  [(.*?)]", item)[-1]
    except Exception:
        print(("ignoring", item))
        return None
    return filename + [ignore_type]


def run():
    output = subprocess.run(["mypy", "."], capture_output=True)  # nosec
    remove_last = output.stdout.splitlines()[:-1]
    file_refs = [s.decode("utf-8") for s in remove_last]
    files = [
        cut(item, slice(0, 2))
        for item in file_refs
        if cut(item, slice(0, 2)) is not None
    ]

    uniques = uniq(files)

    for filename, ignore_type in uniques.items():
        (file, line, *_) = filename.split(":")
        subprocess.run(  # nosec
            [
                "sed",
                "-i",
                f"{line},{line} {{s/$/  # type: ignore[{ignore_type}]/}}",
                file,
            ]
        )  # no backups


if __name__ == "__main__":
    run()