帮我用Python写一个智能聊天程序

好的，下面是一个简单的智能聊天程序：

import random

# 定义回答列表
greetings = ['Hello!', 'Hi!', 'Hey!', 'How are you?', 'Nice to meet you.']
goodbyes = ['Goodbye!', 'Bye!', 'See you later.']
questions = ['How old are you?', 'What is your name?', 'Where are you from?', 'What do you like to do?', 'What is your favorite color?']
answers = ['I am a chatbot.', 'My name is PythonBot.', 'I am from the internet.', 'I like to help people.', 'My favorite color is blue.']

# 定义回答函数
def respond(input_text):
    if 'hello' in input_text.lower() or 'hi' in input_text.lower() or 'hey' in input_text.lower():
        return random.choice(greetings)
    elif 'bye' in input_text.lower() or 'goodbye' in input_text.lower():
        return random.choice(goodbyes)
    elif '?' in input_text:
        return random.choice(answers)
    else:
        return "I'm sorry, I don't understand."

# 主程序
print("Welcome to PythonBot!")
while True:
    input_text = input("You: ")
    if input_text.lower() == 'quit':
        print(random.choice(goodbyes))
        break
    response = respond(input_text)
    print("PythonBot:", response)

这个程序可以回答一些简单的问题，也可以打招呼和告别。运行程序后，输入问题或者打招呼，程序会根据输入自动选择回答。如果想退出程序，输入“quit”即可。