In this code example we will create a simple clock. There will be a console based example and a simple gui version as well.
We will use the datetime module which provides classes for manipulating dates and times.
We will use the strftime() which has a method for formatting date objects into easily readable strings, it takes one parameter, which is a format code which is used to specify the format of the returned string.
We will use the following format codes, there are many others available.
%H Hour 00-23 %p AM/PM %M Minute 00-59 %S Second 00-59
Command line example
#!/usr/bin/env python import datetime now = datetime.datetime.now() print (now.strftime("%H:%M:%S %p"))
If you run this example you will see something like this. This shows several runs.
Now we will create a gui example, for this we will use tkinter
#!/usr/bin/env python import tkinter # retrieve the system time from time import strftime top = tkinter.Tk() #title of the App top.title('Digital Clock') #restric the resizable of the gui window top.resizable(0,0) def time(): string = strftime('%H:%M:%S %p') clock.config(text = string) clock.after(1000, time) #black background with yellow text clock = tkinter.Label(top, font = ('arial', 40, 'bold'), background = 'black', foreground = 'yellow') clock.pack(anchor = 'center') time() top.mainloop()
If you run this example you will see a gui that looks something like this