如何克服 PySimpleGUI 中的“NoneTypeObject”错误？

Question

下面是我的 PySimpleGUI 代码。我想通过“拆分”功能将我的文本转换为字符。然后我想在按下“阅读”按钮后一个接一个地听这些字符。我有一个按钮“停止”来停止执行该功能。请检查此代码并告诉我为什么会出错。谢谢你

from tkinter.constants import TRUE
import PySimpleGUI as sg
from PySimpleGUI.PySimpleGUI import Window
import pyttsx3
import time
import _thread

layout = [
    [sg.Text('Enter what you wanna teach : ')],
    [sg.Input(key='-inp-')],
    [sg.Button('Reads'),sg.Button('Stop'),sg.Button('Exit')]
]

window = sg.Window("Narrator",layout)
engine = pyttsx3.init()
chars = []
a = 0.5
stop = False
def splits(sentence):
    return list(sentence)
def speak(a):
    global stop
    for i in range (len(chars) and not stop):   
        engine.say(chars[i])
        time.sleep(a)
        engine.runAndWait()
while TRUE:
    event,values = window.read()
    
    if event == 'Reads':
        out = values['-inp-']
        chars = splits(out)
        stop = False
        _thread.start_new_thread(speak(a), ())
    elif event == 'Stop':
        stop = True
    elif event == 'Exit' or event == sg.WIN_CLOSED:
        break

错误是：

Exception ignored in thread started by: <_pydev_bundle.pydev_monkey._NewThreadStartupWithTrace object at 0x000001AF5370C400>
Traceback (most recent call last):
  File "c:\Users\Kashi\.vscode\extensions\ms-python.python-2021.9.1246542782\pythonFiles\lib\python\debugpy\_vendored\pydevd\_pydev_bundle\pydev_monkey.py", line 1054, in __call__
    ret = self.original_func(*self.args, **self.kwargs)
TypeError: 'NoneType' object is not callable

在它开始说出第一个字符后出现此错误。

Answer 1

有问题

• 线程的第一个参数是函数speak，而不是speak(a)的结果。
• for i in range (len(chars) and not stop):，它将是for i in range(0): 或for i in range(1):。

在此处更新代码

import time
import _thread

import pyttsx3
import PySimpleGUI as sg


def splits(sentence):
    return list(sentence)

def speak(a):
    global stop
    for i in range(len(chars)):
        if stop:
            break
        engine.say(chars[i])
        time.sleep(a)
        engine.runAndWait()

layout = [
    [sg.Text('Enter what you wanna teach : ')],
    [sg.Input(key='-inp-')],
    [sg.Button('Reads'),sg.Button('Stop'),sg.Button('Exit')]
]

window = sg.Window("Narrator",layout)
engine = pyttsx3.init()
chars = []
a = 0.5
stop = False

while True:

    event, values = window.read()

    if event in (sg.WIN_CLOSED, "Exit"):
        break
    elif event == 'Reads':
        out = values['-inp-'].strip()
        if out:
            chars = splits(out)
            stop = False
            _thread.start_new_thread(speak, (a,))
    elif event == 'Stop':
        stop = True

window.close()