init with basic working example

singleuser.py

@@ -0,0 +1,49 @@
+#!/usr/bin/env python
+
+import tornado.httpserver
+import tornado.ioloop
+import tornado.options
+from tornado.web import RequestHandler, Application
+from tornado import web
+from tornado.log import app_log
+
+from tornado.options import define, options
+
+define("port", default=8888, help="run on the given port", type=int)
+define("user", default='', help="my username", type=str)
+
+class BaseHandler(RequestHandler):
+    cookie_name = 'multiusertest'
+    @property
+    def user(self):
+        return self.settings['user']
+    
+    def get_current_user(self):
+        user = self.get_cookie(self.cookie_name, '')
+        if user and user == self.user:
+            return user
+        else:
+            raise web.HTTPError(403, "User %s does not have access to %s" % (user, self.user))
+
+class MainHandler(BaseHandler):
+    
+    @web.authenticated
+    def get(self, uri):
+        self.write("single-user %s: %s" % (self.user, uri))
+
+def main():
+    tornado.options.parse_command_line()
+    application = Application([
+        (r"(.*)", MainHandler),
+    ],
+        user=options.user,
+        login_url='/login',
+    )
+    http_server = tornado.httpserver.HTTPServer(application)
+    http_server.listen(options.port)
+    app_log.info("single user %s listening on %s" % (options.user, options.port))
+    tornado.ioloop.IOLoop.instance().start()
+
+
+if __name__ == "__main__":
+    main()