Pygame 按键在 Jupyter 实验室的第二次运行单元格中不起作用

Question

当我在 Jupyter Lab 中的内核重新启动后运行下面的代码时，如果我按下空格键，将产生一个突出显示的 'aaa'（应该如此）。

但是，如果我不得不再次重新运行同一个单元格（没有重新启动内核），击中空格键只会导致 Jupyter Lab 向下滚动并被 pygame 忽略，尽管程序在所有其他方面仍在运作

关于每次在 Jupyter 实验室运行该单元时如何让按键工作的任何想法？

谢谢

offset = 2130

#!/usr/bin/env python3

import argparse
import os
import queue
import sounddevice as sd
import vosk
import sys
import ast
import time
import colored
import pygame


start = time.time()
pygame.init()

q = queue.Queue()



def int_or_str(text):
    """Helper function for argument parsing."""
    try:
        return int(text)
    except ValueError:
        return text

def callback(indata, frames, time, status):
    """This is called (from a separate thread) for each audio block."""
    if status:
        print(status, file=sys.stderr)
    q.put(bytes(indata))

parser = argparse.ArgumentParser(add_help=False)
parser.add_argument(
    '-l', '--list-devices', action='store_true',
    help='show list of audio devices and exit')
args, remaining = parser.parse_known_args()
if args.list_devices:
    print(sd.query_devices())
    parser.exit(0)
parser = argparse.ArgumentParser(
    description=__doc__,
    formatter_class=argparse.RawDescriptionHelpFormatter,
    parents=[parser])
parser.add_argument(
    '-f', '--filename', type=str, metavar='FILENAME',
    help='audio file to store recording to')
parser.add_argument(
    '-m', '--model', type=str, metavar='MODEL_PATH',
    help='Path to the model')
parser.add_argument(
    '-d', '--device', type=int_or_str,
    help='input device (numeric ID or substring)')
parser.add_argument(
    '-r', '--samplerate', type=int, help='sampling rate')
args = parser.parse_args(remaining)

try:
    if args.model is None:
        args.model = "model"
    if not os.path.exists(args.model):
        print ("Please download a model for your language from https://alphacephei.com/vosk/models")
        print ("and unpack as 'model' in the current folder.")
        parser.exit(0)
    if args.samplerate is None:
        device_info = sd.query_devices(args.device, 'input')
        # soundfile expects an int, sounddevice provides a float:
        args.samplerate = int(device_info['default_samplerate'])

    model = vosk.Model(args.model)

    if args.filename:
        dump_fn = open(args.filename, "wb")
    else:
        dump_fn = None

    with sd.RawInputStream(samplerate=args.samplerate, blocksize = 8000, device=args.device, dtype='int16',
                            channels=1, callback=callback):
            print('#' * 80)
            print('Press Ctrl+C to stop the recording')
            print('#' * 80)
            
            print(f'offset = {offset}')

            rec = vosk.KaldiRecognizer(model, args.samplerate)
            xxx = True
            while xxx==True:
                
                data = q.get()
                if rec.AcceptWaveform(data):
            
                    yag = rec.Result()
                    yag3 = ast.literal_eval(yag)
                    
                    sec = time.time()-start + offset
                    ty_res = time.gmtime(sec)
                    res = time.strftime("%H:%M:%S",ty_res)
    
                    try:
                        print(f"{res} - {yag3['text']}")
                    except:
                        print(f"{res} - oops")
                else:
                    pass

                if dump_fn is not None:
                    dump_fn.write(data)
                for event in pygame.event.get():
                    if event.type == pygame.KEYDOWN:
                        if event.key == pygame.K_RETURN:
                            print('\nDone') 
                            xxx = False
#                             parser.exit(0)
                            pygame.quit()
                            
 
                            
                        if event.key == pygame.K_SPACE:
                            print(f"{colored.bg(226)} aaa {colored.bg(231)} ")   

except KeyboardInterrupt:
    print('\nDone')  
    pygame.quit()
    parser.exit(0)

except Exception as e:
    parser.exit(type(e).__name__ + ': ' + str(e))
    pygame.quit()