各位彦祖请教一下，cpa或者sub2api不支持非流式返回吗？ 
还是我哪里配置有问题 

from openai import OpenAI 
client = OpenAI( 
api_key=“sk-**********************”, 
base_url=“https://cpa.123456.com/v1”, 
) 
response = client.chat.completions.create( 
model=“gpt-5.4”, 
messages=[ 
{“role”: “user”, “content”: “你好”} 
], 
) 
print(response.choices[0].message.content) 

代码如上，返回 NONE