如何修复Python代码中的未绑定本地错误？

你能帮我解决这个问题吗？ 在我运行它30秒之后，它会说“UnboundLocalError:赋值前引用的局部变量'command'”，你能帮我修复它吗？我尝试了很多关于如何修复这个错误的教程，但是我做不到

import speech_recognition as sr
import pyttsx3
import pywhatkit
import datetime
import pyjokes

listener = sr.Recognizer()
engine = pyttsx3.init()
voices = engine.getProperty('voices')
engine.setProperty('voice', voices[1].id)


def talk(text):
    engine.say(text)
    engine.runAndWait()


def take_command():
    try:
        with sr.Microphone() as source:
            print('listening...')
            voice = listener.listen(source)
            command = listener.recognize_google(voice)
            command = command.lower()
            if 'idiot' in command:
                command = command.replace('idiot', '')
                print(command)
    except:
        pass

    return command

def run_idiot():
    command = take_command()
    print(command)
    if 'play' in command:
        song = command.replace('play', '')
        talk('playing ' + song)
        pywhatkit.playonyt(song)
    elif 'time' in command:
        time = datetime.datetime.now().strftime('%I:%M %p')
        print(time)
        talk(time)
    
    else:
        talk('Please say the command again.')


while True:
    run_idiot()

---

如果发生异常，您将没有

命令的定义

，因此返回它将导致无限本地错误。因此，您需要首先声明：

def take_command():
    # declare 'command' variable outside try-except
    command = ""
    try:
        with sr.Microphone() as source:
            print('listening...')
            voice = listener.listen(source)
            command = listener.recognize_google(voice)
            command = command.lower()
            if 'idiot' in command:
                command = command.replace('idiot', '')
                print(command)
    except:
        pass

    return command

---

请用完整的错误回溯更新您的问题。