小编Zac*_*lze的帖子

我试图弄清楚为什么这个代码崩溃,如果我尝试完成第二次运行线程.

我第一次单击"开始5个线程"它运行得很好并完成.但是,如果我再次点击它.整个程序崩溃,我得到QThread:当线程仍在运行时销毁错误

此代码可在网上找到.我想从中吸取教训.

import time
import sys

from PyQt5.QtCore import QObject, QThread, pyqtSignal, pyqtSlot
from PyQt5.QtWidgets import QApplication, QPushButton, QTextEdit, QVBoxLayout, QWidget


def trap_exc_during_debug(*args):
    # when app raises uncaught exception, print info
    print(args)


# install exception hook: without this, uncaught exception would cause application to exit
sys.excepthook = trap_exc_during_debug


class Worker(QObject):
    """
    Must derive from QObject in order to emit signals, connect slots to other signals, and operate in a QThread.
    """

    sig_step = pyqtSignal(int, str)  # worker id, step …