This article focus on creating a stopwatch using Tkinter in python
Tkinter : Tkinter is the standard GUI library for Python. Python when combined with Tkinter provides a fast and easy way to create GUI applications. Tkinter provides a powerful object-oriented interface to the Tk GUI toolkit. It’s very easy to get started with Tkinter, here are some sample codes to get your hands on Tkinter in python.
Python3
# Python program to create a# a new window using Tkinter# importing the required librariesimport tkinter# creating a object 'top' as instance of class Tktop = tkinter.Tk()# This will start the blank windowtop.mainloop() |
Output:
Creating Stopwatch using Tkinter
Now lets try to create a program using Tkinter module to create a stopwatch.
A stopwatch is a handheld timepiece designed to measure the amount of time elapsed from a particular time when it is activated to the time when the piece is deactivated. A large digital version of a stopwatch designed for viewing at a distance, as in a sports stadium, is called a stop clock. In manual timing, the clock is started and stopped by a person pressing a button. In fully automatic time, both starting and stopping are triggered automatically, by sensors.
Required Modules: We are only going to use Tkinter for creating GUI and no other libraries will be used in this program.
Source Code:
Python3
# Python program to illustrate a stop watch# using Tkinter#importing the required librariesimport tkinter as Tkinterfrom datetime import datetimecounter = 66600running = Falsedef counter_label(label): def count(): if running: global counter # To manage the initial 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 stopwatchdef Start(label): global running running=True counter_label(label) start['state']='disabled' stop['state']='normal' reset['state']='normal' # Stop function of the stopwatchdef Stop(): global running start['state']='normal' stop['state']='disabled' reset['state']='normal' running = False # Reset function of the stopwatchdef 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() |
Output:
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