문제 풀이소스코드(app.py)def backup_notes(timestamp): with lock: with open('./tmp/notes.tmp', 'w') as f: f.write(repr(notes)) print(f'cp ./tmp/notes.tmp /tmp/{timestamp}') subprocess.Popen(f'cp ./tmp/notes.tmp /tmp/{timestamp}', shell=True)...@app.route('/backup_notes', methods=['POST'])def post_backup_notes(): if len(notes) == 0: abort(404) backup_timesta..