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遇到下述报错，用lsof那个命令查询端口占用，如这个pid是39326，用kill -9命令杀掉

• Serving Flask app 'main'
• Debug mode: on

Address already in use
Port 5000 is in use by another program. Either identify and stop that program, or start the server with a different port.
~/Python lsof -i:5000
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
python 39326 root 5u IPv4 3929152084 0t0 TCP localhost:5000 (LISTEN)
python 39326 root 6u IPv4 3929152084 0t0 TCP localhost:5000 (LISTEN)
~/Python kill -9 39326