Tkinter :

commonly comes bundled with Python, using Tk and is Python's standard GUI framework. It is famous for its simplicity and graphical user interface. It is open-source and available under the Python License.

Note : Tkinter comes pre-installed with Python3, and you need not bother about installing it.

Now, let's build a very simple GUI with the help of Tkinter and understand it with the help of a flow diagram.

Flow Diagram for Rendering a Basic GUI

Let's break down the above flow diagram and understand what each component is handling!

• First, you import the key component, i.e., the Tkinter module.
• As a next step, you initialize the window manager with the tkinter.Tk() method and assign it to a variable. This method creates a blank window with close, maximize, and minimize buttons on the top as a usual GUI should have.
• Then as an optional step, you will Rename the title of the window as you like with window.title(title_of_the_window).
• Next, you make use of a widget called Label, which is used to insert some text into the window.
• Then, you make use of Tkinter's geometry management attribute called pack() to display the widget in size it requires.
• Finally, as the last step, you use the mainloop() method to display the window until you manually close it. It runs an infinite loop in the backend.

import tkinter
window = tkinter.Tk()
# to rename the title of the window
window.title("GUI")
# pack is used to show the object in the window
label = tkinter.Label(window, text = "Welcome to DataCamp's Tutorial on Tkinter!").pack()
window.mainloop()

After running the above code in a terminal, you shall see a similar output, as shown below.

Similarly, you could have a widget Button, and the GUI will display a button instead of some text (Label).

import tkinter
window = tkinter.Tk()
window.title("Button GUI")
button_widget = tkinter.Button(window, text="Welcome to DataCamp's Tutorial on Tkinter")
button_widget.pack()
tkinter.mainloop()