this code is for calculator

calculator.py

@@ -0,0 +1,48 @@
+import tkinter as tk
+
+def on_click(button_value):
+    current_text = entry.get()
+    if current_text == "Error":
+        current_text = ""
+
+    if button_value == "=":
+        try:
+            result = eval(current_text)
+            entry.delete(0, tk.END)
+            entry.insert(tk.END, str(result))
+        except Exception:
+            entry.delete(0, tk.END)
+            entry.insert(tk.END, "Error")
+    elif button_value == "C":
+        entry.delete(0, tk.END)
+    else:
+        entry.insert(tk.END, button_value)
+
+# Create the main window
+app = tk.Tk()
+app.title("Simple Calculator")
+
+# Entry widget for displaying and entering numbers
+entry = tk.Entry(app, width=20, font=('Arial', 16), borderwidth=2, relief="solid")
+entry.grid(row=0, column=0, columnspan=4)
+
+# Button layout
+buttons = [
+    '7', '8', '9', '/',
+    '4', '5', '6', '*',
+    '1', '2', '3', '-',
+    '0', 'C', '=', '+'
+]
+
+# Function to create and place buttons
+row_val = 1
+col_val = 0
+for button in buttons:
+    tk.Button(app, text=button, width=5, height=2, command=lambda b=button: on_click(b)).grid(row=row_val, column=col_val)
+    col_val += 1
+    if col_val > 3:
+        col_val = 0
+        row_val += 1
+
+# Run the application
+app.mainloop()