ImportError: cannot import name 'VerifyTypes' from 'httpx._types' #796
Description
langserve/client.py imports VerifyTypes from encode/httpx ._types and results in an import error. I did a bit of digging on commit history in this repo and httpx and can't figure out what is the breaking change, or when this 'VerifyTypes' thing went missing 🤷
Simply removing VerifyTypes from client.py line 24 fixes the import error.
Environment:
❯ python --version && pip list
Python 3.12.7
Package Version
------------------------ -----------
aiohappyeyeballs 2.4.3
aiohttp 3.11.8
aiosignal 1.3.1
annotated-types 0.7.0
anyio 4.6.2.post1
attrs 24.2.0
bandit 1.8.0
boto3 1.35.71
boto3-stubs 1.35.71
boto3-stubs-full 1.35.71
botocore 1.35.71
botocore-stubs 1.35.71
certifi 2024.8.30
charset-normalizer 3.4.0
click 8.1.7
fastapi 0.115.5
frozenlist 1.5.0
greenlet 3.1.1
h11 0.14.0
httpcore 1.0.7
httpx 0.28.0
httpx-sse 0.4.0
idna 3.10
iniconfig 2.0.0
jmespath 1.0.1
jsonpatch 1.33
jsonpointer 3.0.0
langchain 0.3.9
langchain-aws 0.2.7
langchain-core 0.3.21
langchain-text-splitters 0.3.2
langgraph 0.2.53
langgraph-checkpoint 2.0.7
langgraph-sdk 0.1.40
langserve 0.3.0
langsmith 0.1.147
loguru 0.7.2
markdown-it-py 3.0.0
mdurl 0.1.2
msgpack 1.1.0
multidict 6.1.0
numpy 1.26.4
orjson 3.10.12
packaging 24.2
pandas 2.2.3
pbr 6.1.0
pdf2image 1.17.0
pillow 11.0.0
pip 24.2
pluggy 1.5.0
propcache 0.2.0
pydantic 2.10.2
pydantic_core 2.27.1
Pygments 2.18.0
pytest 8.3.3
python-dateutil 2.9.0.post0
pytz 2024.2
PyYAML 6.0.2
requests 2.32.3
requests-toolbelt 1.0.0
rich 13.9.4
ruff 0.7.4
s3transfer 0.10.4
six 1.16.0
sniffio 1.3.1
SQLAlchemy 2.0.36
sse-starlette 2.1.3
starlette 0.41.3
stevedore 5.4.0
tenacity 9.0.0
types-awscrt 0.23.1
types-s3transfer 0.10.4
typing_extensions 4.12.2
tzdata 2024.2
urllib3 2.2.3
uvicorn 0.32.1
yarl 1.18.0