Python GUI Area of Triangle

By | March 30, 2020

Topic:Python GUI Program Area of Triangle with base and height


# Python GUI Program to calculate 
# Area of a Triangle
# When base and height given

from tkinter import *

def calculate_area():
	base = float(entry1.get())
	height = float(entry2.get())
	area = 1 / 2 * base * height 
	output_label.configure(text = ' Area of Triangle= {:.2f} ' .format(area))
main_window = Tk()
main_window.title('Python GUI TUTORIALS, ')

message_label1 = Label(text= 'Enter base: ' ,font=( ' Verdana ' , 18))
message_label2 = Label(text= ' Enter height: ' ,font=( ' Verdana ' , 18))
output_label = Label(font=( ' Verdana ' , 18), text='Area of Triangle is:')
entry1 = Entry(font=( ' Verdana ' , 18), width=6)
entry2 = Entry(font=( ' Verdana ' , 18), width=6)
calc_button = Button(text= ' Calculate Area ' , font=( ' Verdana ' , 16),command=calculate_area)

message_label1.grid(row=1, column=0)
entry1.grid(row=1, column=1)

message_label2.grid(row=2, column=0)
entry2.grid(row=2, column=1)

calc_button.grid(row=1, column=2, rowspan=2)
output_label.grid(row=3, column=0, columnspan=3)

How this program works?

  • We use Python tkinter module to create GUI of this application
  • First of all we create a main window for the program.
  • we set the title of the main window.
  • create a label widget with message “Enter base“.
  • create a label widget with message “Enter height:“.
  • create a two text boxes / entry widgets to get the user input
  • create a button and attached a function calculate_area() using command=calculate_area
  • Hence when the user will input base and height  in the entry widgets and click on the button, the calculate_area() function will execute.
  • This calculate_area() function will calculate and show the area of the triangle in a label.

Perfect Programming Tutorials, Python , Java, C Language, C++


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