Build a Stunning Modern Calculator Using Python Tkinter

✅ Full Working Code (Modern Calculator – Python Tkinter)

import tkinter as tk
from tkinter import font

class ModernCalculator:
    def __init__(self, master):
        self.master = master
        master.title("✨ Modern Calculator")
        master.geometry("350x550")
        master.configure(bg="#1a1a2e")
        master.resizable(False, False)

        # Color scheme
        self.colors = {
            'bg': "#1a1a2e",
            'display_bg': "#16213e",
            'display_fg': "#00fff5",
            'number_btn': "#0f3460",
            'number_hover': "#e94560",
            'operator_btn': "#533483",
            'operator_hover': "#e94560",
            'equal_btn': "#e94560",
            'equal_hover': "#ff6b6b",
            'clear_btn': "#c0392b",
            'clear_hover': "#e74c3c",
            'text_light': "#ecf0f1"
        }

        # Fonts
        self.display_font = font.Font(family='Helvetica', size=28, weight='bold')
        self.button_font = font.Font(family='Helvetica', size=16, weight='bold')

        # Display Frame
        display_frame = tk.Frame(master, bg="#0f0f23", padx=10, pady=10)
        display_frame.grid(row=0, column=0, columnspan=4, padx=15, pady=15, sticky="nsew")

        # History
        self.history = tk.Label(
            display_frame,
            text="",
            font=('Helvetica', 10),
            bg=self.colors['display_bg'],
            fg="#7f8c8d",
            anchor='e'
        )
        self.history.pack(fill=tk.X)

        # Display
        self.display = tk.Entry(
            display_frame,
            font=self.display_font,
            bg=self.colors['display_bg'],
            fg=self.colors['display_fg'],
            bd=0,
            justify='right',
            insertbackground=self.colors['display_fg']
        )
        self.display.pack(fill=tk.BOTH, expand=True, ipady=15)

        # Buttons
        buttons = [
            ('C', 1, 0, self.colors['clear_btn'], 'clear'),
            ('⌫', 1, 1, self.colors['clear_btn'], 'backspace'),
            ('%', 1, 2, self.colors['operator_btn'], 'operator'),
            ('÷', 1, 3, self.colors['operator_btn'], 'operator'),

            ('7', 2, 0, self.colors['number_btn'], 'number'),
            ('8', 2, 1, self.colors['number_btn'], 'number'),
            ('9', 2, 2, self.colors['number_btn'], 'number'),
            ('×', 2, 3, self.colors['operator_btn'], 'operator'),

            ('4', 3, 0, self.colors['number_btn'], 'number'),
            ('5', 3, 1, self.colors['number_btn'], 'number'),
            ('6', 3, 2, self.colors['number_btn'], 'number'),
            ('-', 3, 3, self.colors['operator_btn'], 'operator'),

            ('1', 4, 0, self.colors['number_btn'], 'number'),
            ('2', 4, 1, self.colors['number_btn'], 'number'),
            ('3', 4, 2, self.colors['number_btn'], 'number'),
            ('+', 4, 3, self.colors['operator_btn'], 'operator'),

            ('00', 5, 0, self.colors['number_btn'], 'number'),
            ('0', 5, 1, self.colors['number_btn'], 'number'),
            ('.', 5, 2, self.colors['number_btn'], 'number'),
            ('=', 5, 3, self.colors['equal_btn'], 'equal')
        ]

        self.buttons = {}

        for text, row, col, color, btype in buttons:
            btn = tk.Button(
                master,
                text=text,
                font=self.button_font,
                bg=color,
                fg=self.colors['text_light'],
                bd=0,
                width=5,
                height=2,
                cursor='hand2'
            )
            btn.grid(row=row, column=col, padx=5, pady=5, sticky="nsew")

            if btype == 'number':
                btn.bind('<Enter>', lambda e, b=btn: b.config(bg=self.colors['number_hover']))
                btn.bind('<Leave>', lambda e, b=btn, c=color: b.config(bg=c))
            elif btype == 'operator':
                btn.bind('<Enter>', lambda e, b=btn: b.config(bg=self.colors['operator_hover']))
                btn.bind('<Leave>', lambda e, b=btn, c=color: b.config(bg=c))
            elif btype == 'equal':
                btn.bind('<Enter>', lambda e, b=btn: b.config(bg=self.colors['equal_hover']))
                btn.bind('<Leave>', lambda e, b=btn, c=color: b.config(bg=c))
            else:
                btn.bind('<Enter>', lambda e, b=btn: b.config(bg=self.colors['clear_hover']))
                btn.bind('<Leave>', lambda e, b=btn, c=color: b.config(bg=c))

            if text == 'C':
                btn.config(command=self.clear)
            elif text == '⌫':
                btn.config(command=self.backspace)
            elif text == '=':
                btn.config(command=self.calculate)
            else:
                btn.config(command=lambda x=text: self.click(x))

            self.buttons[text] = btn

        for i in range(6):
            master.grid_rowconfigure(i, weight=1)
        for i in range(4):
            master.grid_columnconfigure(i, weight=1)

    def click(self, key):
        if key == '×':
            key = '*'
        elif key == '÷':
            key = '/'
        elif key == '%':
            key = '/100'
        self.display.insert(tk.END, key)

    def calculate(self):
        try:
            expr = self.display.get()
            self.history.config(text=expr + " =")
            result = eval(expr)
            self.display.delete(0, tk.END)
            self.display.insert(0, result)
        except:
            self.display.delete(0, tk.END)
            self.display.insert(0, "Error")

    def clear(self):
        self.display.delete(0, tk.END)
        self.history.config(text="")

    def backspace(self):
        self.display.delete(len(self.display.get()) - 1, tk.END)

if __name__ == "__main__":
    root = tk.Tk()
    ModernCalculator(root)
    root.mainloop()

Calculator