How to Handle ValueError Exceptions in Python

def divide_numbers(a, b):
    try:
        result = a / b
        return f"{a} / {b} = {result}"
    except ZeroDivisionError:
        return "Error: Cannot divide by zero."
    except TypeError:
        return "Error: Please provide numbers, not strings."
    except ValueError:
        return "Error: Invalid value detected."


def parse_integer(user_input):
    try:
        number = int(user_input)
        return f"Parsed integer: {number}"
    except ValueError:
        return f"Error: '{user_input}' is not a valid integer."
    except TypeError:
        return "Error: Input must be a string."


if __name__ == "__main__":
    print("--- Division Examples ---")
    print(divide_numbers(10, 2))
    print(divide_numbers(10, 0))
    print(divide_numbers("10", 2))

    print("\n--- Integer Parsing Examples ---")
    print(parse_integer("42"))
    print(parse_integer("hello"))
    print(parse_integer(None))