How to 'clear' the port when restarting django runserver

Question

Often, when restarting Django runserver, if I use the same port number, I get a \'port is already in use\' message. Subsequently, I need to increment the port number each t

Answer 1

Add the following library in manage.py

import os
import subprocess
import re

Now add the following python code after if __name__ == "__main__":

ports = ['8000']
popen = subprocess.Popen(['netstat', '-lpn'],
                         shell=False,
                         stdout=subprocess.PIPE)
(data, err) = popen.communicate()
pattern = "^tcp.*((?:{0})).* (?P[0-9]*)/.*$"
pattern = pattern.format(')|(?:'.join(ports))
prog = re.compile(pattern)
for line in data.split('\n'):
    match = re.match(prog, line)
    if match:
        pid = match.group('pid')
        subprocess.Popen(['kill', '-9', pid])

This will first find the process id of port 8000 , will kill it and then restart your project. Now each time you don't need to kill the pid manually.