Loop based Math Chat Agent in Python

print("🤖 Simple AI Chat Agent")

print("Type 'exit' anytime to stop\n")

#creating empty list to store the chats later

chat_history = []

#creating function for mathematical calculations since its a math chat agent

def calculations(expression):

    try:

        result = eval(expression)

        return f"The answer is {result}"

    except:

        return "I couldn’t understand that.please use numbers instead of letters"

#creating function for storing message, how and what to respond

def chatrespond(usermessage):

    usrmsg = usermessage.lower()

    chat_history.append(usermessage)

    # Greetings - when user says hello

    if "hello" in usrmsg or "hi" in usrmsg:

        return "Hello! How can I help you?"

    # when user asks How are you

    if "how are you" in usrmsg:

        return "I’m just Python based Math Chat agent, but running smoothly 😄"

    # when user ask who are you

    if all(keyword in usrmsg for keyword in ["what","can","do?"]) or all(keyword in usrmsg for keyword in ["tell","about","you?"]) or all(keyword in usrmsg for keyword in ["who","are","you?"]):

        return "I am a chat based calculator, I can do basic mathematical calculations"

    # when user ask ur Name

    if "your name" in usrmsg:

        return "I am your Python Chat agent to help with math."

    # just to remind user about Memory

    if len(chat_history) > 20:

        return "We’ve been chatting quite a bit."

    # when used send Math questions

    if any(op in usrmsg for op in ["+", "-", "*", "/","(",")"]):

        return calculations(usrmsg)

    # Default message if user ask anything outside above messages

    return "I am still learning more. As of now, my expertise currently focused on basic mathematical calculations"

#creating loop for chat and starting the chat loop, when to break it

while True:

    user_input = input("You: ")

    if user_input.lower() == "exit":

        print("AI: Goodbye! 👋")

        break

    reply = chatrespond(user_input)

    print("AI:", reply)