chatbot.py

import random

# lists of possible replies for variety
greetings = ["Hi there!", "Hello!", "Hey, good to see you!"]
how_are_you_replies = ["I'm doing great, thanks!", "I'm fine, how about you?", "Pretty good!"]
jokes = [
    "Why do programmers prefer dark mode? Because light attracts bugs.",
    "Why did the computer go to therapy? It had too many bytes of trauma.",
    "I would tell you a UDP joke, but you might not get it."
]
unknown_replies = ["Sorry, I didn't get that.", "Can you rephrase that?", "I'm not sure what you mean."]


def get_response(msg, user_name):
    msg = msg.lower()

    if "hello" in msg or "hi" in msg:
        return random.choice(greetings)

    elif "how are you" in msg:
        return random.choice(how_are_you_replies)

    elif "my name is" in msg:
        name = msg.split("my name is")[1].strip()
        return "Nice to meet you, " + name.capitalize() + "!"

    elif "your name" in msg:
        return "I am a simple chatbot made in Python."

    elif "joke" in msg:
        return random.choice(jokes)

    elif "thank" in msg:
        return "You're welcome!"

    elif "help" in msg:
        return "You can say things like: hello, how are you, tell me a joke, my name is ___, or bye."

    elif "bye" in msg:
        if user_name != "":
            return "Goodbye, " + user_name.capitalize() + "! Take care."
        else:
            return "Goodbye! Take care."

    else:
        return random.choice(unknown_replies)


def main():
    print("Chatbot: Hi! I'm a simple chatbot. Type 'bye' anytime to end the chat.")
    print("Chatbot: Type 'help' if you want to know what I can do.\n")

    user_name = ""

    while True:
        msg = input("You: ")

        # save name if the user introduces themselves
        if "my name is" in msg.lower():
            user_name = msg.lower().split("my name is")[1].strip()

        response = get_response(msg, user_name)
        print("Chatbot:", response)

        if "bye" in msg.lower():
            break


main()