Method get_content_version

python/python3/tornado/web.py:2858–2873

Returns a version string for the resource at the given path. This class method may be overridden by subclasses. The default implementation is a SHA-512 hash of the file's contents. .. versionadded:: 3.1

(cls, abspath: str)

    @classmethod
    def get_content_version(cls, abspath: str) -> str:
        """Returns a version string for the resource at the given path.

        This class method may be overridden by subclasses.  The
        default implementation is a SHA-512 hash of the file's contents.

        .. versionadded:: 3.1
        """
        data = cls.get_content(abspath)
        hasher = hashlib.sha512()
        if isinstance(data, bytes):
            hasher.update(data)
        else:
            for chunk in data:
                hasher.update(chunk)
        return hasher.hexdigest()

    def _stat(self) -> os.stat_result:
        assert self.absolute_path is not None