webapp2.py 文件源码

def __init__(self, request=None, response=None):
        """Initializes this request handler with the given WSGI application,
        Request and Response.

        When instantiated by ``webapp.WSGIApplication``, request and response
        are not set on instantiation. Instead, initialize() is called right
        after the handler is created to set them.

        Also in webapp dispatching is done by the WSGI app, while webapp2
        does it here to allow more flexibility in extended classes: handlers
        can wrap :meth:`dispatch` to check for conditions before executing the
        requested method and/or post-process the response.

        .. note::
           Parameters are optional only to support webapp's constructor which
           doesn't take any arguments. Consider them as required.

        :param request:
            A :class:`Request` instance.
        :param response:
            A :class:`Response` instance.
        """
        self.initialize(request, response)