最近大家有没有发现Openai的openai已经更新到1.6.1了，而且API的调用方式发生了巨大的变化，下面来看看openai新的调用方式吧。

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module ‘openai’ has no attribute 'ChatCompletion. 提示openai的版本过低。(pip install -U openai)

1. Chat API

from openai import OpenAI
api_key = ''
client = OpenAI(api_key=api_key)

response = client.chat.completions.create(
  model="gpt-3.5-turbo",
  messages=[
    {"role": "system", "content": "You are a helpful assistant."},
    {"role": "user", "content": "Who won the world series in 2020?"},
    {"role": "assistant", "content": "The Los Angeles Dodgers won the World Series in 2020."},