无法将本地主机：8000 与 Google App Engine 绑定

Question

I am trying to run a Python app in Google App Engine. The UI doesn't work so I tried using the command lines. I tried restarting my PC, I tried changing port with "dev_appserver.py --port=9999 ." but it still says Unable to bind localhost:8000 :

    raise BindError('Unable to bind %s:%s' % self.bind_addr)
google.appengine.tools.devappserver2.wsgi_server.BindError: Unable to bind localhost:8000

Answer 1

The app server starts two servers; one for your application, the other for the development console . It is that second server that is causing the problem here; it normally would be run on port 8000.

Change the ip address for the development console with the --admin_port switch:

dev_appserver.py --admin_port=9000

You may still want to change the port for the main application server too, of course.

Also see the command-line arguments documentation for dev_appserver.py .

Answer 2

It is possible some application is binding to your port in autostart event. It's highly probable to be the same service you are trying to run. In that case try killing the process

ps -ef | grep 'process_name'

Use kill -9 'pid' to end the process.

Answer 3

计算机重启做到了，关闭谷歌应用引擎启动器，重新启动计算机然后再次启动成功了......

Answer 4

终止旧终端并从新终端开始，这是我能找到的最简单的方法

Answer 5

Being unable a port is usually a sign of one of two things:

• You don't have permissions
• Something is already running there.

You can try hitting the local port 8080 with your browser to see what is there, and kill it if it shouldn't be.

As for permissions - only look for this afterwards. Presuming you are in windows (you didn't specify this), then you should be able to bind this as a normal user.

As for the command line - have you tried replacing the "=" with a space - I've seen both forms in documentation for app-engine.

dev_appserver.py --port 9999 .