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source code to make calculator using tkinter

import tkinter as tk def button_click(symbol): current = entry.get() entry.delete(0, tk.END) entry.insert(0, current + symbol) def clear(): entry.delete(0, tk.END) def calculate(): try: result = eval(entry.get()) entry.delete(0, tk.END) entry.insert(0, result) except Exception as e: entry.delete(0, tk.END) entry.insert(0, "Error") root = tk.Tk() root.title("Simple Calculator") entry = tk.Entry(root, width=30, borderwidth=5) entry.grid(row=0, column=0, columnspan=4, padx=10, pady=10) buttons = [ ('7', 1, 0), ('8', 1, 1), ('9', 1, 2), ('/', 1, 3), ('4', 2, 0), ('5', 2, 1), ('6', 2, 2), ('*', 2, 3), ('1', 3, 0), ('2', 3, 1), ('3', 3, 2), ('-', 3, 3), ('0', 4, 0), ('.', 4, 1), ('=', 4, 2), ('+', 4, 3) ] for (symbol, row, col) in buttons: button = tk.Button(root, text=symbol, padx=20, pady=10, command=lambda sym=symbol: button_click(sym)) button.grid(row=row, column=col) button_clear = tk.Button(root, text='C', padx=20, pady=10, command=clear) button_clear.grid(row=5, column=0) button_equal = tk.Button(root, text='=', padx=20, pady=10, command=calculate) button_equal.grid(row=5, column=2) root.mainloop()

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