Shulou(Shulou.com)06/01 Report--

This article introduces the knowledge of "how to realize the simple countdown function in python". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

The details are as follows:

Use tkinter to make the interface to realize the countdown function.

Use time.sleep (1) to achieve a second countdown

Use threads to avoid interface jams

Detect global flag bits in the thread's loop to ensure that the timing thread is reset and exited

Use pyinstaller-F file.py-w to generate exe files,-w to hide the console, and-F to generate a single file

The code is as follows:

#! / usr/bin/python3.8#-*-coding: utf-8-*-# @ Time: 2021-4-19 14 Author @ Author: dongdong# @ File: CountdownGUI.py# @ Software: PyCharmfrom tkinter import * import timeimport threadingdef cyclethread (): global counttime global restartflag global runflag restartflag=False if (timestr.get (). Isdigit ()): counttime = int (timestr.get ()) * 60 else: runflag=False return While (1): if (restartflag): counttime= int (timestr.get ()) * 60 restartflag=False if (exitflag): sys.exit () counttime=counttime-1 v='left time:'+str (counttime//60) +':'+ str (counttime%60) textshow.set (v) root.update () if (counttime

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