Method get_version

python/python3/tornado/web.py:3001–3015

Generate the version string to be used in static URLs. ``settings`` is the `Application.settings` dictionary and ``path`` is the relative location of the requested asset on the filesystem. The returned value should be a string, or ``None`` if no version could be dete

(cls, settings: Dict[str, Any], path: str)

    @classmethod
    def get_version(cls, settings: Dict[str, Any], path: str) -> Optional[str]:
        """Generate the version string to be used in static URLs.

        ``settings`` is the `Application.settings` dictionary and ``path``
        is the relative location of the requested asset on the filesystem.
        The returned value should be a string, or ``None`` if no version
        could be determined.

        .. versionchanged:: 3.1
           This method was previously recommended for subclasses to override;
           `get_content_version` is now preferred as it allows the base
           class to handle caching of the result.
        """
        abs_path = cls.get_absolute_path(settings["static_path"], path)
        return cls._get_cached_version(abs_path)

    @classmethod
    def _get_cached_version(cls, abs_path: str) -> Optional[str]: