web.py 文件源码

def static_url(self, path):
        """Returns a static URL for the given relative static file path.

        This method requires you set the 'static_path' setting in your
        application (which specifies the root directory of your static
        files).

        We append ?v=<signature> to the returned URL, which makes our
        static file handler set an infinite expiration header on the
        returned content. The signature is based on the content of the
        file.

        If this handler has a "include_host" attribute, we include the
        full host for every static URL, including the "http://". Set
        this attribute for handlers whose output needs non-relative static
        path names.
        """
        self.require_setting("static_path", "static_url")
        static_handler_class = self.settings.get(
            "static_handler_class", StaticFileHandler)
        if getattr(self, "include_host", False):
            base = self.request.protocol + "://" + self.request.host
        else:
            base = ""
        return base + static_handler_class.make_static_url(self.settings, path)