코드스니펫 복사 후 실행 하면 이런 오류가 뜹니다.

/Users/jaewoo/Desktop/sparta/projects/prac/venv/bin/python /Users/jaewoo/Desktop/sparta/projects/prac/app.py 

 * Serving Flask app 'app'

 * 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.

On macOS, try disabling the 'AirPlay Receiver' service from System Preferences -> Sharing.

종료 코드 1(으)로 완료된 프로세스