def get_installed_pypackages():
    return {p.project_name.lower(): p for p in pkg_resources.working_set}
def decode(value):
    if isinstance(value, bytes):
        value = value.decode(errors="surrogateescape")

    for char in ("\\", "\n", "\t"):
        value = value.replace(
            char.encode(encoding="unicode-escape").decode(), char
        )

    return value