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Introduction to Tkinter

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  • Difficulty Level : Easy
  • Last Updated : 22 May, 2020
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Graphical User Interface(GUI) is a form of user interface which allows users to interact with computers through visual indicators using items such as icons, menus, windows, etc. It has advantages over the Command Line Interface(CLI) where users interact with computers by writing commands using keyboard only and whose usage is more difficult than GUI.

What is Tkinter?

Tkinter is the inbuilt python module that is used to create GUI applications. It is one of the most commonly used modules for creating GUI applications in Python as it is simple and easy to work with. You don’t need to worry about the installation of the Tkinter module separately as it comes with Python already. It gives an object-oriented interface to the Tk GUI toolkit.

Some other Python Libraries available for creating our own GUI applications are

  • Kivy
  • Python Qt
  • wxPython

    Among all Tkinter is most widely used

    What are Widgets?

    Widgets in Tkinter are the elements of GUI application which provides various controls (such as Labels, Buttons, ComboBoxes, CheckBoxes, MenuBars, RadioButtons and many more) to users to interact with the application.

    Fundamental structure of tkinter program

    Basic Tkinter Widgets:

    Widgets Description
    Label It is used to display text or image on the screen
    Button It is used to add buttons to your application
    Canvas It is used to draw pictures and others layouts like texts, graphics etc.
    ComboBox It contains a down arrow to select from list of available options
    CheckButton It displays a number of options to the user as toggle buttons from which user can select any number of options.
    RadiButton It is used to implement one-of-many selection as it allows only one option to be selected
    Entry It is used to input single line text entry from user
    Frame It is used as container to hold and organize the widgets
    Message It works same as that of label and refers to multi-line and non-editable text
    Scale It is used to provide a graphical slider which allows to select any value from that scale
    Scrollbar It is used to scroll down the contents. It provides a slide controller.
    SpinBox It is allows user to select from given set of values
    Text It allows user to edit multiline text and format the way it has to be displayed
    Menu It is used to create all kinds of menu used by an application


      from tkinter import * 
      from tkinter.ttk import *
      # writing code needs to
      # create the main window of 
      # the application creating 
      # main window object named root
      root = Tk()
      # giving title to the main window
      # Label is what output will be 
      # show on the window
      label = Label(root, text ="Hello World !").pack()
      # calling mainloop method which is used
      # when your application is ready to run
      # and it tells the code to keep displaying 



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