Try to unzip a file in a flat hierarchy

extractor.py

import zipfile
import os

from typing import List

def extract(file: str, path: str=".") -> List[str]:
    names = []
    with zipfile.ZipFile(file) as zip_file:
        for member in zip_file.namelist():
            data = zip_file.read(member)

            file_name = member.split('/')[-1]
            if not file_name:
                continue

            with open(os.path.join(path, file_name), "wb") as f:
                f.write(data)

            names.append(file_name)

    return names