def get_user_input()

in chat.py [0:0]

• 12 lines of code
• 4 McCabe index (conditional complexity)

def get_user_input():
    """
    Prompt the user to input a question.

    Returns:
        str: The user's input question, or special commands like 'CTRL_D'.
    """
    try:
        question = input("You: ").strip()
        if not question:
            print("Error: Input cannot be empty.")
            return None
        return question
    except EOFError:
        # Ctrl+D pressed
        return 'CTRL_D'
    except KeyboardInterrupt:
        print("\nOperation cancelled by user.")
        sys.exit(0)