flask.py 文件源码

def __init__(self, package_name):
        self.debug = False
        self.package_name = package_name
        self.view_functions = {}
        self.error_handlers = {}
        self.request_init_funcs = []
        self.request_shutdown_funcs = []
        self.url_map = Map()

        if self.static_path is not None:
            self.url_map.add(Rule(self.static_path + '/<filename>',
                                  build_only=True, endpoint='static'))

        self.jinja_env = Environment(loader=self.create_jinja_loader(),
                                     **self.jinja_options)
        self.jinja_env.globals.update(
            url_for=url_for,
            request=request,
            session=session,
            g=g,
            get_flashed_messages=get_flashed_messages
        )