Simple calculator using python for kaniyam.com article

Simplepythoncalculator.py

from math import sqrt

print("""Welcome to this wonderful and very easy-to-learn calculator 
created by Srikaleeswarar!""")

print("""In this calculator, you can easily do the following operations:
  Addition (1)
  Subtraction (2)
  Multiplication (3)
  Division (4)
  Power (5)
  Square Root (6)
Please select the operation by entering the corresponding number.""")

try:
    operator = int(input("Select the operation that you want to proceed: "))
    
    if operator > 6 or operator <= 0:
        print("Enter a correct option between 1 and 6.")
        exit()

    a = float(input("Enter the first value: "))

    if operator == 5:
        p = int(input("Enter the power value: "))
        print(f"The value of {a}^{p} is:", a ** p)

    elif operator == 6:
        if a < 0:
            print("Error: Cannot calculate square root of a negative number.")
        else:
            print(f"The square root of {a} is:", sqrt(a))

    else:
        b = float(input("Enter the second value: "))
        
        if operator == 1:
            print(f"Sum of {a} + {b} is:", a + b)
        elif operator == 2:
            print(f"The subtracted value of {a} - {b} is:", a - b)
        elif operator == 3:
            print(f"The multiplied value of {a} × {b} is:", a * b)
        elif operator == 4:
            if b == 0:
                print("Error: Division by zero is not allowed.")
            else:
                print(f"The divided value of {a} by {b} is:", a / b)

    print("Thank you for using the calculator!")

except ValueError:
    print("Invalid input: Please enter numbers only.")
except Exception as e:
    print("Sorry folks, there's an error:", e)