Function cat_files

test/utils_shared.py:600–605

Cat multiple files into dest.

(dest, *sources)

def cat_files(dest, *sources):
    """Cat multiple files into dest."""
    with open(dest, "wb") as fdst:
        for src in sources:
            with open(src, "rb") as fsrc:
                shutil.copyfileobj(fsrc, fdst)


@contextlib.contextmanager