Create app.py

app.py

@@ -0,0 +1,39 @@
+```
+# Kamran's Calculator
+
+def kamran_calculator():
+    print("Welcome to Kamran's Calculator!")
+    
+    while True:
+        print("\nOperations:")
+        print("1. Addition")
+        print("2. Subtraction")
+        print("3. Multiplication")
+        print("4. Division")
+        print("5. Exit")
+        
+        choice = input("Choose an operation (1-5): ")
+        
+        if choice in ['1', '2', '3', '4']:
+            num1 = float(input("Enter first number: "))
+            num2 = float(input("Enter second number: "))
+            
+            if choice == '1':
+                print(f"{num1} + {num2} = {num1 + num2}")
+            elif choice == '2':
+                print(f"{num1} - {num2} = {num1 - num2}")
+            elif choice == '3':
+                print(f"{num1} * {num2} = {num1 * num2}")
+            elif choice == '4':
+                if num2 != 0:
+                    print(f"{num1} / {num2} = {num1 / num2}")
+                else:
+                    print("Error! Division by zero.")
+        elif choice == '5':
+            print("Goodbye!")
+            break
+        else:
+            print("Invalid choice. Please choose again.")
+
+kamran_calculator()
+```