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Create Desktop Apps Using Python & Tkinter

Calculator App - Part 3

Explore building a calculator app with Python's Tkinter by adding an OptionMenu widget for multiple operations. Learn to perform addition, subtraction, multiplication, and division through interactive GUI elements, gaining practical experience in Python app development.

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Now we will implement other mathematical functions using the OptionMenu widget. This will allow the user to choose the operation they want to perform.

Adding an OptionMenu widget

Let’s create a label and an OptionMenu with four options: “add”, “subtract”, “multiply”, and “divide”.

Python 3.8
opLabel = tk.Label(text = "Select the Operation: ")

opLabel.grid(column=0,row=2)



myOption = tk.StringVar(window)

myOption.set("Select")

opMenu = tk.OptionMenu(window, myOption, "Add","Subtract", "Multiply", "Divide")

opMenu.grid(column=1,row=2)

Now, the ...