在 Python 中為函數設置倒數計時器

Question

我需要設置一個倒數計時器（2 分鍾），以便第一次初始化函數獲得回調（它將在 2 分鍾內不斷獲得回調）。 當 2 分鍾結束時，重置計時器並執行其他操作，當我的“主”函數結束時，等待來自 clipboard_monitor.on_text() 的新觸發器，以便再次為初始化函數設置倒數計時器。 這一切都可能嗎？

代碼：

import clipboard_monitor

class ABC():
  def __init__(self):
      .....
      
      .....
  def initialize(url):
      run = ABC()
      toDo.append(url)
      # What I ideally want is to print the message bellow with a counter of how many times this 
      # function has been called
      print("URL has been added to queue for download.")
      # For every element in the list.
      for x in toDo:
        # main() is another function I have that I am using what I got from the clipboard.
        run.main(x)
        # if the last element reached empty list and exit loop
        if x == toDo[-1]:
          toDo = [""]
          break
      .....
      
      .....
  def main(self, url):
      .....
      
      .....

clipboard_monitor.on_text(ABC.initialize)
clipboard_monitor.wait()

謝謝

Answer 1

你可以像這樣使用時間模塊：

import time

class countdown_timer():
    def __init__(self):
        self.time_end = 0
        self._is_running = False
        self.start_time = None
    
    def start(self, countdown_time):
        self.start_time = time.time()
        self.time_end = countdown_time
        self._is_running = True
    
    def get_time(self):
        if time.time() - self.start_time >= self.time_end:
            self._is_running = False
        if self._is_running:
            return self.time_end - (time.time() - self.start_time)
        else:
            return 0
    
    def is_running(self):
        if time.time() - self.start_time >= self.time_end:
            self._is_running = False
        return self._is_running

並像這樣使用它：

timer1 = countdown_timer()  # create the timer
timer1.start(120)           # start the timer
timer1.get_time()           # return number of seconds until timer as reach 0
timer1.is_running()         # return True if timer is running, False if time have reach 0