如何限制一个函数,使它不会抛出任何异常

def process_data(input_data):
    if not input_data:
        print("Error: Input data is empty.")
        return None
    # Process data

def process_data(input_data):
    try:
        if not input_data:
            print("Error: Input data is empty.")
            return None
        # Process data
    except Exception as e:
        print(f"Error: {e}")
        return None

def process_data(input_data):
    if not input_data:
        return "Error: Input data is empty."
    # Process data
    return processed_data

def process_data(input_data):
    try:
        if not input_data:
            return "Error: Input data is empty."
        # Process data
    finally:
        print("Processing completed.")