使用python创建秒表 _Python创建秒表

本文重点介绍在python中使用Tkinter创建秒表
【使用python创建秒表】Tkinter：Tkinter是Python的标准GUI库。与Tkinter结合使用时, Python提供了一种快速简便的方法来创建GUI应用程序。 Tkinter为Tk GUI工具包提供了强大的面向对象的界面。开始使用Tkinter非常容易, 这里有一些示例代码可帮助你使用python来使用Tkinter。

# Python program to create a # a new window using Tkinter # importing the required libraires import tkinter# creating a object 'top' as instance of class Tk top = tkinter.Tk()# This will start the blank window top.mainloop()

输出如下：

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使用Tkinter创建秒表
现在让我们尝试使用Tkinter模块创建程序来创建秒表。
秒表是一种手持式钟表, 设计用于测量从启动特定时间到关闭该表的时间所经过的时间。秒表的大型数字版本, 例如在体育馆中, 可以远距离观看, 称为秒表。在手动计时中, 时钟由人按下按钮启动和停止。在全自动时间内, 启动和停止均由传感器自动触发。
所需模块：我们将仅使用Tkinter来创建GUI, 并且此程序中不会使用其他任何库。
源代码：

# Python program to illustrate a stop watch # using Tkinter #importing the required libraries import tkinter as Tkinter from datetime import datetime counter = 66600 running = False def counter_label(label): def count(): if running: global counter # To manage the intial delay. if counter = = 66600 : display = "Starting..." else : tt = datetime.fromtimestamp(counter) string = tt.strftime( "%H:%M:%S" ) display = string label[ 'text' ] = display# Or label.config(text=display) # label.after(arg1, arg2) delays by # first argument given in milliseconds # and then calls the function given as second argument. # Generally like here we need to call the # function in which it is present repeatedly. # Delays by 1000ms=1 seconds and call count again. label.after( 1000 , count) counter + = 1# Triggering the start of the counter. count()# start function of the stopwatch def Start(label): global running running = True counter_label(label) start[ 'state' ] = 'disabled' stop[ 'state' ] = 'normal' reset[ 'state' ] = 'normal'# Stop function of the stopwatch def Stop(): global running start[ 'state' ] = 'normal' stop[ 'state' ] = 'disabled' reset[ 'state' ] = 'normal' running = False# Reset function of the stopwatch def Reset(label): global counter counter = 66600# If rest is pressed after pressing stop. if running = = False : reset[ 'state' ] = 'disabled' label[ 'text' ] = 'Welcome!'# If reset is pressed while the stopwatch is running. else : label[ 'text' ] = 'Starting...'root = Tkinter.Tk() root.title( "Stopwatch" ) # Fixing the window size. root.minsize(width = 250 , height = 70 ) label = Tkinter.Label(root, text = "Welcome!" , fg = "black" , font = "Verdana 30 bold" ) label.pack() f = Tkinter.Frame(root) start = Tkinter.Button(f, text = 'Start' , width = 6 , command = lambda :Start(label)) stop = Tkinter.Button(f, text = 'Stop' , width = 6 , state = 'disabled' , command = Stop) reset = Tkinter.Button(f, text = 'Reset' , width = 6 , state = 'disabled' , command = lambda :Reset(label)) f.pack(anchor = 'center' , pady = 5 ) start.pack(side = "left" ) stop.pack(side = "left" ) reset.pack(side = "left" ) root.mainloop()

输出如下：