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tk.Button(self.master, text=text, width=5, height=2, font=('Arial', 16), command=lambda: self.button_click(text)) button.grid(row=row, column=column, padx=5, pady=5) def button_click(self, text): if text == "=": try: result = str(eval(self.entry.get())) self.entry.delete(0, tk.END)