Python Tutorial For Beginners - Compounding Interest Calculator
#python#compoundinterest#RSAP4YOU#
Source code:
import all classes / functions from the tkinter
from tkinter import *
Function for clearing the
contents of all entry boxes
def clear_all() :
whole content of entry boxes is deleted
principle_field.delete(0, END)
rate_field.delete(0, END)
time_field.delete(0, END)
compound_field.delete(0, END)
set focus on the principle_field entry box
principle_field.focus_set()
Function to find compound interest
def calculate_ci():
get a content from entry box
principle = int(principle_field.get())
rate = float(rate_field.get())
time = int(time_field.get())
Calculates compound interest
CI = principle * (pow((1 + rate / 100), time))
insert method inserting the
value in the text entry box.
compound_field.insert(10, CI)
Driver code
if _name_ == "__main__" :
Create a GUI window
root = Tk()
Set the background colour of GUI window
root.configure(background = 'light green')
Set the configuration of GUI window
root.geometry("400x250")
set the name of tkinter GUI window
root.title("Compound Interest Calculator")
Create a Principle Amount : label
label1 = Label(root, text = "Principle Amount(Rs) : ",
fg = 'black', bg = 'red')
Create a Rate : label
label2 = Label(root, text = "Rate(%) : ",
fg = 'black', bg = 'red')
Create a Time : label
label3 = Label(root, text = "Time(years) : ",
fg = 'black', bg = 'red')
Create a Compound Interest : label
label4 = Label(root, text = "Compound Interest : ",
fg = 'black', bg = 'red')
grid method is used for placing
the widgets at respective positions
in table like structure .
padx keyword argument used to set padding along x-axis .
pady keyword argument used to set padding along y-axis .
label1.grid(row = 1, column = 0, padx = 10, pady = 10)
label2.grid(row = 2, column = 0, padx = 10, pady = 10)
label3.grid(row = 3, column = 0, padx = 10, pady = 10)
label4.grid(row = 5, column = 0, padx = 10, pady = 10)
Create a entry box
for filling or typing the information.
principle_field = Entry(root)
rate_field = Entry(root)
time_field = Entry(root)
compound_field = Entry(root)
grid method is used for placing
the widgets at respective positions
in table like structure .
padx keyword argument used to set padding along x-axis .
pady keyword argument used to set padding along y-axis .
principle_field.grid(row = 1, column = 1, padx = 10, pady = 10)
rate_field.grid(row = 2, column = 1, padx = 10, pady = 10)
time_field.grid(row = 3, column = 1, padx = 10, pady = 10)
compound_field.grid(row = 5, column = 1, padx = 10, pady = 10)
Create a Submit Button and attached
to calculate_ci function
button1 = Button(root, text = "Submit", bg = "red",
fg = "black", command = calculate_ci)
Create a Clear Button and attached
to clear_all function
button2 = Button(root, text = "Clear", bg = "red",
fg = "black", command = clear_all)
button1.grid(row = 4, column = 1, pady = 10)
button2.grid(row = 6, column = 1, pady = 10)
Start the GUI
root.mainloop()
Author : KUMAR AMARJEET RAJ
E-mail: [email protected]
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