प्रोग्राम की सुविधाएँ · UTF-8 फ़ाइलों का परमाणु प्रतिस्थापन

import os
from pathlib import Path
from tempfile import NamedTemporaryFile

def replace_utf8(path, text):
    if not isinstance(path, (str, Path)) or type(text) is not str:
        raise ValueError("replace.input")
    target, data = Path(path), text.encode("utf-8")
    temporary = None
    try:
        with NamedTemporaryFile(dir=target.parent, prefix=".swap-", delete=False) as out:
            temporary = Path(out.name)
            out.write(data)
        os.replace(temporary, target)
    finally:
        if temporary is not None:
            temporary.unlink(missing_ok=True)