Prerequisites: Python GUI â 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 â
tkinter - Create the main window (container)
- Add any number of widgets to the main window
- Apply the event Trigger on the widgets.
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.
# Python program to create a simple GUI # weight converter using Tkinter from tkinter import * # Create a GUI window window = Tk() # Function to convert weight # given in kg to grams, pounds # and ounces def 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 widgets e1 = 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 Widgets t1 = Text(window, height = 1, width = 20) t2 = Text(window, height = 1, width = 20) t3 = Text(window, height = 1, width = 20) # Create the Button Widget b1 = Button(window, text = "Convert", command = from_kg) # grid method is used for placing # the widgets at respective positions # in table like structure e1.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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