How to stream responses from Assistants API? The quickstart example doesn't seem to be working

[Defozo]

Confirm this is an issue with the Python library and not an underlying OpenAI API

• This is an issue with the Python library

Describe the bug

I get ERROR:api.routes:Error in event generator: 'StreamingEventHandler' object has no attribute '_AssistantEventHandler__stream' when I use the example code to enable streaming from Assistants API. Additionaly, The method "create_and_stream" in class "AsyncRuns" is deprecated.

To Reproduce

Use example code from https://platform.openai.com/docs/assistants/quickstart

from typing_extensions import override
from openai import AssistantEventHandler
 
# First, we create a EventHandler class to define
# how we want to handle the events in the response stream.
 
class EventHandler(AssistantEventHandler):    
  @override
  def on_text_created(self, text) -> None:
    print(f"\nassistant > ", end="", flush=True)
      
  @override
  def on_text_delta(self, delta, snapshot):
    print(delta.value, end="", flush=True)
      
  def on_tool_call_created(self, tool_call):
    print(f"\nassistant > {tool_call.type}\n", flush=True)
  
  def on_tool_call_delta(self, delta, snapshot):
    if delta.type == 'code_interpreter':
      if delta.code_interpreter.input:
        print(delta.code_interpreter.input, end="", flush=True)
      if delta.code_interpreter.outputs:
        print(f"\n\noutput >", flush=True)
        for output in delta.code_interpreter.outputs:
          if output.type == "logs":
            print(f"\n{output.logs}", flush=True)
 
# Then, we use the `stream` SDK helper 
# with the `EventHandler` class to create the Run 
# and stream the response.
 
with client.beta.threads.runs.stream(
  thread_id=thread.id,
  assistant_id=assistant.id,
  instructions="Please address the user as Jane Doe. The user has a premium account.",
  event_handler=EventHandler(),
) as stream:
  stream.until_done()

Code snippets

No response

OS

Docker container: FROM python:3.9

Python version

Python v3.9

Library version

v1.51.2