This article focuses on evaluation of mathematical expression using the Tkinter and math packeges in Python.
Tkinter: Python Tkinter is a GUI programming package or built-in package. Tkinter provides the Tk GUI toolkit with a potent object-oriented interface. Python with tkinter is the fastest and easiest way to create the GUI applications. Creating a GUI using tkinter is an easy task.
Math module: In python, a variety of mathematical operations can be carried out with ease by importing a python module called “math” that specifies various functions, making our tasks simpler.
Steps involved in conversion of temperature:
- Importing the tkinter & math packages.
- Create the main window.
- Add number of widgets to the main window : Entry , Label.
- Evaluating the expression.
- Displaying message.
- Apply the event trigger on the widgets.
PYTHON
# Importing tkinter module as tk import tkinter as tk # Importing all functions/methods # from math module from math import * # Import messagebox class from tkinter from tkinter import messagebox # function for evaluating the expression def eval_expression(event): result.configure(text = " Result: " + str(eval(entry.get()))) messagebox.showinfo("Evaluate Expression", "Successfully evaluated" ) # creating Tk window root = tk.Tk() # set geometry of root window root.geometry('300x150+600+200') # set the title of root window root.title('Evaluate Expression') # label and entry field input_label = tk.Label(root, text = " Enter Your Expression:",).grid(row = 1) entry = tk.Entry(root) # bind 'enter' event to the # eval_expression() through # entry widget entry.bind(" |
OUTPUT :
Evaluate expression gui
Evaluate expression working
Below is a video which demonstrates the execution of the code in PyCharm:
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