When writing a python project, the port 8000 I want to use is occupied by other programs, mainly because the restart of the Django project is invalid because the liunx system is not completely closed. The solution is as follows:
1. Find an occupied program
netstat -apn | grep 8000
The last item shows the pid and the corresponding name
2. Kill the corresponding process, kill the process completely
kill -9 pid
3. Restart the service and successfully solve the problem
