python编写一个GUI倒计时器

本文实例为大家分享了python实现GUI倒计时器的具体代码，供大家参考，具体内容如下代码：importtkinterastkfromtimeimporttimeprint(hello...

本文实例为大家分享了python实现GUI倒计时器的具体代码，供大家参考，具体内容如下

代码：

import tkinter as tk
from time import time

print("hello world")


class TimeCounter:
  def __init__(self):
    root = tk.Tk()
    root.title("计时器")
    root.geometry('800x600')
    self.display = tk.Label(root, text="00:00", width=20, font=('微软雅黑', 50), fg="red")
    self.pythondisplay.pack()

    self.button_start = tk.Button(root, text='start', command=self.start)
    self.button_start.pack()

    self.Varmin = tk.StringVar()
    self.entrymin = tk.Entry(root, textvariable = self.Varmin)
    self.entrymin.pack()

    self.Varsec = tk.StringVar()
    self.entrysec = tk.Entry(root, textvariable = self.Varsec)
    self.entrysec.pack()

    self.paused = True
    root.mainloop()   # 进入消息循环

  def start(self):
    if self.paused:
      self.oldtime = time()
      self.paused = False
      self.run_timer()
  def gettime(self):
    try:
      min = self.entrymin.get()
      min = int(min)
    except:
      min = 0

    try:
      sec = self.entrysec.get()
      sec = int(sec)
    except:
      sec = 0

    self.minsec = 60*min+sec

    return self.minsec

  def run_timer(self):

    self.minsec = self.gettime()
    self.deltas = time() - self.oldtime  # 正向计时
    self.deltas1 = self.minsec - self.deltas

    print(self.deltas)
    print(self.deltas1)
    if self.deltas1>0:
      deltasstr = '{:.0f}:{:.3f}'.format(*divmod(self.deltas1,60))  #用 * 拆分这个元组
    else:
      deltasstr = '00:00'

    print(deltasstr)
    self.display.config(text = deltasstr) #更新 text
    self.display.after(1,self.run_twww.cppcns.comimer) # 间隔1毫秒再次执行run_timer函数，after循环定时器


TimeCounter()

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