python修改web服务器端口,为什么Web.py不让我在端口80上运行服务器？

我试图用Web.py创建一个网站，但它不允许我打开端口80上的create a socket，但它可以在其他端口上工作。

我已经转发了端口，所以这不是问题所在。python main.py 80

但当我这样做的时候，我得到了一个错误：http://0.0.0.0:80/

Traceback (most recent call last):

File "main.py", line 43, in

app.run()

File "/usr/local/lib/python2.7/dist-packages/web/application.py", line 311, in run

return wsgi.runwsgi(self.wsgifunc(*middleware))

File "/usr/local/lib/python2.7/dist-packages/web/wsgi.py", line 54, in runwsgi

return httpserver.runsimple(func, validip(listget(sys.argv, 1, '')))

File "/usr/local/lib/python2.7/dist-packages/web/httpserver.py", line 148, in runsimple

server.start()

File "/usr/local/lib/python2.7/dist-packages/web/wsgiserver/__init__.py", line 1753, in start

raise socket.error(msg)

socket.error: No socket could be created

到目前为止，我的代码是：import MySQLdb

import web

import hashlib as h

urls = (