Curly quote fixer script

fix_curly_quotes.py

#!/usr/bin/env python
import argparse


def main(argv=None):
    parser = argparse.ArgumentParser(
        description="Replace curly quotes with straight versions."
    )
    parser.add_argument(
        "file",
        nargs="+",
        type=argparse.FileType("r+", encoding="utf-8"),
    )
    args = parser.parse_args(argv)

    exit_code = 0
    for file in args.file:
        if fix_file(file):
            exit_code = 1
        file.close()

    return exit_code


translate_quotes = str.maketrans(
    {
        "“": '"',
        "”": '"',
        "‘": "'",
        "’": "'",
    }
)


def fix_file(file):
    orig_text = file.read()
    new_text = orig_text.translate(translate_quotes)
    changed = new_text != orig_text
    if changed:
        print(f"Fixing {file.name}")
        file.seek(0)
        file.write(new_text)
        file.truncate()
    return changed


if __name__ == "__main__":
    raise SystemExit(main())