GUI Programlama (Tkinter)

Tkinter ile GUI

import tkinter as tk
from tkinter import messagebox

class HesapMakinesi:
    def __init__(self):
        self.pencere = tk.Tk()
        self.pencere.title("Hesap Makinesi")
        self.pencere.geometry("300x200")
        
        # Giriş alanları
        tk.Label(self.pencere, text="1. Sayı:").pack(pady=5)
        self.sayi1 = tk.Entry(self.pencere)
        self.sayi1.pack()
        
        tk.Label(self.pencere, text="2. Sayı:").pack(pady=5)
        self.sayi2 = tk.Entry(self.pencere)
        self.sayi2.pack()
        
        # Butonlar
        btn_frame = tk.Frame(self.pencere)
        btn_frame.pack(pady=10)
        
        tk.Button(btn_frame, text="+", command=lambda: self.hesapla("+"), width=5).grid(row=0, column=0, padx=2)
        tk.Button(btn_frame, text="-", command=lambda: self.hesapla("-"), width=5).grid(row=0, column=1, padx=2)
        tk.Button(btn_frame, text="×", command=lambda: self.hesapla("*"), width=5).grid(row=0, column=2, padx=2)
        tk.Button(btn_frame, text="÷", command=lambda: self.hesapla("/"), width=5).grid(row=0, column=3, padx=2)
        
        self.sonuc_label = tk.Label(self.pencere, text="Sonuç: ", font=("Arial", 14))
        self.sonuc_label.pack(pady=10)
    
    def hesapla(self, islem):
        try:
            a = float(self.sayi1.get())
            b = float(self.sayi2.get())
            sonuc = eval(f"{a} {islem} {b}")
            self.sonuc_label.config(text=f"Sonuç: {sonuc:.2f}")
        except:
            messagebox.showerror("Hata", "Geçersiz giriş!")
    
    def calistir(self):
        self.pencere.mainloop()

app = HesapMakinesi()
app.calistir()