Prerequisites: Python GUI – tkinter
Python offers multiple options for developing a GUI (Graphical User Interface). Out of all the GUI methods, Tkinter is the most commonly used method. It is a standard Python interface to the Tk GUI toolkit shipped with Python. Python with Tkinter outputs the fastest and easiest way to create GUI applications. Creating a GUI using Tkinter is an easy task.
Steps to Create a Tkinter:
- Importing the module – tkinter
- Create the main window (container)
- Add any number of widgets to the main window
- Apply the event Trigger on the widgets.
Below is what the GUI looks like:
Let’s create a GUI based weight converter that accepts a kilogram input value and converts that value to grams, pounds, and ounces when the user clicks the Convert button.
Below is the implementation.
Python3
# Python program to create a simple GUI # weight converter using Tkinter from tkinter import *# Create a GUI windowwindow = Tk() # Function to convert weight# given in kg to grams, pounds# and ouncesdef from_kg(): # convert kg to gram gram = float(e2_value.get())*1000 # convert kg to pound pound = float(e2_value.get())*2.20462 # convert kg to ounce ounce = float(e2_value.get())*35.274 # Enters the converted weight to # the text widget t1.delete("1.0", END) t1.insert(END,gram) t2.delete("1.0", END) t2.insert(END,pound) t3.delete("1.0", END) t3.insert(END,ounce)# Create the Label widgetse1 = Label(window, text = "Enter the weight in Kg")e2_value = StringVar()e2 = Entry(window, textvariable = e2_value)e3 = Label(window, text = 'Gram')e4 = Label(window, text = 'Pounds')e5 = Label(window, text = 'Ounce')# Create the Text Widgetst1 = Text(window, height = 1, width = 20)t2 = Text(window, height = 1, width = 20)t3 = Text(window, height = 1, width = 20)# Create the Button Widgetb1 = Button(window, text = "Convert", command = from_kg)# grid method is used for placing # the widgets at respective positions # in table like structuree1.grid(row = 0, column = 0)e2.grid(row = 0, column = 1)e3.grid(row = 1, column = 0)e4.grid(row = 1, column = 1)e5.grid(row = 1, column = 2)t1.grid(row = 2, column = 0)t2.grid(row = 2, column = 1)t3.grid(row = 2, column = 2)b1.grid(row = 0, column = 2)# Start the GUI window.mainloop() |
Output:
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