PyQt5 QTimer計數，直到特定的秒

Question

我正在python中創建一個程序，我正在使用pyqt。我目前正在使用QTimer，我想每秒打印一次「定時器工作」並在5秒後停止打印。這裏是我的代碼：

timers = [] 
def thread_func(): 
    print("Thread works") 
    timer = QtCore.QTimer() 
    timer.timeout.connect(timer_func) 
    timer.start(1000) 
    print(timer.remainingTime()) 
    print(timer.isActive()) 
    timers.append(timer) 

def timer_func(): 
    print("Timer works") 

Answer 1

下面是展示如何創建一個固定數量的超時之後停止計時器一個簡單的演示。

from PyQt5 import QtCore 

def start_timer(slot, count=1, interval=1000): 
    counter = 0 
    def handler(): 
     nonlocal counter 
     counter += 1 
     slot(counter) 
     if counter >= count: 
      timer.stop() 
      timer.deleteLater() 
    timer = QtCore.QTimer() 
    timer.timeout.connect(handler) 
    timer.start(interval) 

def timer_func(count): 
    print('Timer:', count) 
    if count >= 5: 
     QtCore.QCoreApplication.quit() 

app = QtCore.QCoreApplication([]) 
start_timer(timer_func, 5) 
app.exec_()