Requisitos previos: Introducción a tkinter | programa para calcular interes compuesto
Python ofrece múltiples opciones para desarrollar una GUI (interfaz gráfica de usuario). De todos los métodos GUI, Tkinter es el método más utilizado. En este artículo, aprenderemos cómo crear una aplicación de calculadora GUI de interés compuesto usando Tkinter, con una guía paso a paso.
Para crear un Tkinter:
- Importando el módulo – tkinter
- Crear la ventana principal (contenedor)
- Agregue cualquier cantidad de widgets a la ventana principal.
- Aplique el evento Trigger en los widgets.
A continuación se muestra cómo se verá la GUI:
Vamos a crear una aplicación de calculadora de interés compuesto basada en GUI.
A continuación se muestra la implementación:
Python3
# 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()
Producción :