小编Nin*_*nga的帖子

我在下面的（半）工作示例中有 4 个工作线程。我只能让前三个工作线程工作。如何让第四个线程运行？

print(QThread.idealThreadCount())在我的笔记本电脑上返回“8”。

我可以重新排序代码以使 3 个工作线程的任意组合运行。

from PyQt5.QtCore import QThread, QObject
from PyQt5.QtWidgets import QWidget
import sys
from PyQt5.QtWidgets import QApplication
import time

class A(QObject):
    def run(self):
        while 1:
            print('A', time.ctime())
            time.sleep(1)
class B(QObject):
    def run(self):
        while 1:
            print('B', time.ctime())
            time.sleep(1)
class C(QObject):
    def run(self):
        while 1:
            print('C', time.ctime())
            time.sleep(1)
class D(QObject):
    def run(self):
        while 1:
            print('D', time.ctime())
            time.sleep(1)

class window1(QWidget):
    def __init__ (self, parent = None):
        super().__init__ () #parent widget
        print(QThread.idealThreadCount())

        self.thread1 = QThread()
        obj1 = A() …