Вот пример базовой программы-калькулятора на Python с использованием библиотеки tkinter для графического интерфейса. Для начала необходимо установить библиотеку tkinter через терминал, вводом кода pip install tkinter
Далее просто скопируйте код ниже и вуаля, Ваш первый калькулятор готов!
import tkinter as tk
def calculate():
try:
value = eval(entry.get())
entry.delete(0, tk.END)
entry.insert(0, value)
except:
entry.delete(0, tk.END)
entry.insert(0, "Error")
root = tk.Tk()
root.title("Calculator")
entry = tk.Entry(root, width=35, borderwidth=5)
entry.grid(row=0, column=0, columnspan=3, padx=10, pady=10)
button_1 = tk.Button(root, text="1", padx=40, pady=20, command=lambda: button_click(1))
button_2 = tk.Button(root, text="2", padx=40, pady=20, command=lambda: button_click(2))
button_3 = tk.Button(root, text="3", padx=40, pady=20, command=lambda: button_click(3))
button_4 = tk.Button(root, text="4", padx=40, pady=20, command=lambda: button_click(4))
button_5 = tk.Button(root, text="5", padx=40, pady=20, command=lambda: button_click(5))
button_6 = tk.Button(root, text="6", padx=40, pady=20, command=lambda: button_click(6))
button_7 = tk.Button(root, text="7", padx=40, pady=20, command=lambda: button_click(7))
button_8 = tk.Button(root, text="8", padx=40, pady=20, command=lambda: button_click(8))
button_9 = tk.Button(root, text="9", padx=40, pady=20, command=lambda: button_click(9))
button_0 = tk.Button(root, text="0", padx=40, pady=20, command=lambda: button_click(0))
button_add = tk.Button(root, text="+", padx=39, pady=20, command=button_add)
button_equal = tk.Button(root, text="=", padx=91, pady=20, command=button_equal)
button_clear = tk.Button(root, text="Clear", padx=79, pady=20, command=button_clear)
button_1.grid(row=1, column=0)
button_2.grid(row=1, column=1)
button_3.grid(row=1, column=2)
button_4.grid(row=2, column=0)
button_5.grid(row=2, column=1)
button_6.grid(row=2, column=2)
button_7.grid(row=3, column=0)
button_8.grid(row=3, column=1)
button_9.grid(row=3, column=2)
button
