def __init__(self, prefix, routes):
        assert prefix.startswith('/') and not prefix.endswith('/'), \
            'Path prefixes must start with a slash but not end with a slash.'
        super(PathPrefixRoute, self).__init__(prefix, routes)
Initializes a URL route.
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/webapp2-2.3/webapp2_extras/routes.py/PathPrefixRoute.__init__