AttributeError: 'list' object has no attribute 'raw_items'

[JMarkin]

I try use httpx and get unexpected exception

In [4]: httpx.get(u, allow_redirects=True)

End of trace

/usr/local/lib/python3.8/site-packages/httpcore/_sync/http11.py in handle_request(self, method, url, headers, stream, extensions)
    126             reason_phrase,
    127             headers,
--> 128         ) = self._receive_response(timeout)
    129         response_stream = IteratorByteStream(
    130             iterator=self._receive_response_data(timeout),

/usr/local/lib/python3.8/site-packages/httpcore/_sync/http11.py in _receive_response(self, timeout)
    195         # h11 version 0.11+ supports a `raw_items` interface to get the
    196         # raw header casing, rather than the enforced lowercase headers.
--> 197         headers = event.headers.raw_items()
    198
    199         return http_version, event.status_code, event.reason, headers

AttributeError: 'list' object has no attribute 'raw_items'

It works if I use requests/aiohttp/curl.

Headers from response if I use requests

In [7]: r = requests.get(u, allow_redirects=True)
In [8]: r.headers
Out[8]: {'Server': 'nginx/1.17.3', 'Date': 'Tue, 21 Sep 2021 21:08:24 GMT', 'Content-Type': 'text/xml', 'Transfer-Encoding': 'chunked', 'Connection': 'keep-alive', 'Vary': 'Accept-Encoding', 'Content-Encoding': 'gzip'}

Where is my mistake? Can you help me?

[JMarkin]

I found problem
In my case, I use uvicorn==0.11.8 and max version of h11 is 0.9.x
I don't have errors/warnings on install httpx.
I think need add version of h11>=11 in setup.py(httpcore or httpx).

[tomchristie]

So, httpcore does already specify an h11 version range to use...

https://github.com/encode/httpcore/blob/master/setup.py#L56

[JMarkin]

thanks, my mistake