application.py 文件源码

def gaerun(self, *middleware):
        """
        Starts the program in a way that will work with Google app engine,
        no matter which version you are using (2.5 / 2.7)

        If it is 2.5, just normally start it with app.gaerun()

        If it is 2.7, make sure to change the app.yaml handler to point to the
        global variable that contains the result of app.gaerun()

        For example:

        in app.yaml (where code.py is where the main code is located)

            handlers:
            - url: /.*
              script: code.app

        Make sure that the app variable is globally accessible
        """
        wsgiapp = self.wsgifunc(*middleware)
        try:
            # check what version of python is running
            version = sys.version_info[:2]
            major   = version[0]
            minor   = version[1]

            if major != 2:
                raise EnvironmentError("Google App Engine only supports python 2.5 and 2.7")

            # if 2.7, return a function that can be run by gae
            if minor == 7:
                return wsgiapp
            # if 2.5, use run_wsgi_app
            elif minor == 5:
                from google.appengine.ext.webapp.util import run_wsgi_app
                return run_wsgi_app(wsgiapp)
            else:
                raise EnvironmentError("Not a supported platform, use python 2.5 or 2.7")
        except ImportError:
            return wsgiref.handlers.CGIHandler().run(wsgiapp)