microsoft
nest_asyncio warning when importing qsharp module
Describe the bug In a clean Anaconda environment, importing the qsharp module returns a nest_asyncio warning.
To Reproduce Steps to reproduce the behavior:
- Install conda
- Activate a qsharp environment
- 'import qsharp'
Python 3.9.11 (main, Mar 30 2022, 02:45:55) [MSC v.1916 64 bit (AMD64)] :: Anaconda, Inc. on win32 Type "help", "copyright", "credits" or "license" for more information.
import qsharp Preparing Q# environment... .C:\Users\brbenefield\Anaconda3\envs\qsharp-env\lib\site-packages\nest_asyncio.py:100: RuntimeWarning: Proactor event loop does not implement add_reader family of methods required for zmq. Registering an additional selector thread for add_reader support via tornado. Use
asyncio.set_event_loop_policy(WindowsSelectorEventLoopPolicy())to avoid this warning. handle._run()
Current packages
(qsharp-env) C:\Users\brbenefield>conda list # packages in environment at C:\Users\brbenefield\Anaconda3\envs\qsharp-env: # # Name Version Build Channel argon2-cffi 21.3.0 pyhd3eb1b0_0 argon2-cffi-bindings 21.2.0 py39h2bbff1b_0 asttokens 2.0.5 pyhd3eb1b0_0 attrs 21.4.0 pyhd3eb1b0_0 azure-quantum 0.24.201332 pypi_0 pypi backcall 0.2.0 pyhd3eb1b0_0 bleach 4.1.0 pyhd3eb1b0_0 ca-certificates 2022.3.29 haa95532_0 certifi 2021.10.8 py39haa95532_2 cffi 1.15.0 py39h2bbff1b_1 colorama 0.4.4 pyhd3eb1b0_0 debugpy 1.5.1 py39hd77b12b_0 decorator 5.1.1 pyhd3eb1b0_0 defusedxml 0.7.1 pyhd3eb1b0_0 entrypoints 0.3 py39haa95532_0 executing 0.8.3 pyhd3eb1b0_0 importlib-metadata 4.11.3 py39haa95532_0 importlib_metadata 4.11.3 hd3eb1b0_0 ipykernel 6.9.1 py39haa95532_0 ipython 8.2.0 py39haa95532_0 ipython_genutils 0.2.0 pyhd3eb1b0_1 iqsharp 0.24.201332 py39_0 microsoft jedi 0.18.1 py39haa95532_1 jinja2 3.0.3 pyhd3eb1b0_0 jsonschema 3.2.0 pyhd3eb1b0_2 jupyter_client 7.1.2 pyhd3eb1b0_0 jupyter_core 4.9.2 py39haa95532_0 jupyterlab_pygments 0.1.2 py_0 markupsafe 2.0.1 py39h2bbff1b_0 matplotlib-inline 0.1.2 pyhd3eb1b0_2 mistune 0.8.4 py39h2bbff1b_1000 nbclient 0.5.11 pyhd3eb1b0_0 nbconvert 6.1.0 py39haa95532_0 nbformat 5.1.3 pyhd3eb1b0_0 nest-asyncio 1.5.1 pyhd3eb1b0_0 notebook 6.4.8 py39haa95532_0 openssl 1.1.1n h2bbff1b_0 packaging 21.3 pyhd3eb1b0_0 pandocfilters 1.5.0 pyhd3eb1b0_0 parso 0.8.3 pyhd3eb1b0_0 pickleshare 0.7.5 pyhd3eb1b0_1003 pip 21.2.4 py39haa95532_0 prometheus_client 0.13.1 pyhd3eb1b0_0 prompt-toolkit 3.0.20 pyhd3eb1b0_0 pure_eval 0.2.2 pyhd3eb1b0_0 pycparser 2.21 pyhd3eb1b0_0 pygments 2.11.2 pyhd3eb1b0_0 pyparsing 3.0.4 pyhd3eb1b0_0 pyrsistent 0.18.0 py39h196d8e1_0 python 3.9.11 h6244533_2 python-dateutil 2.8.2 pyhd3eb1b0_0 pywin32 302 py39h827c3e9_1 pywinpty 2.0.2 py39h5da7b33_0 pyzmq 22.3.0 py39hd77b12b_2 qdk-sim-experimental 0.24.201332 pypi_0 pypi qsharp 0.24.201332 pypi_0 pypi qsharp-chemistry 0.24.201332 pypi_0 pypi qsharp-core 0.24.201332 pypi_0 pypi send2trash 1.8.0 pyhd3eb1b0_1 setuptools 58.0.4 py39haa95532_0 six 1.16.0 pyhd3eb1b0_1 sqlite 3.38.2 h2bbff1b_0 stack_data 0.2.0 pyhd3eb1b0_0 terminado 0.13.1 py39haa95532_0 testpath 0.5.0 pyhd3eb1b0_0 tornado 6.1 py39h2bbff1b_0 traitlets 5.1.1 pyhd3eb1b0_0 typing-extensions 4.1.1 hd3eb1b0_0 typing_extensions 4.1.1 pyh06a4308_0 tzdata 2022a hda174b7_0 vc 14.2 h21ff451_1 vs2015_runtime 14.27.29016 h5e58377_2 wcwidth 0.2.5 pyhd3eb1b0_0 webencodings 0.5.1 py39haa95532_1 wheel 0.37.1 pyhd3eb1b0_0 wincertstore 0.2 py39haa95532_2 winpty 0.4.3 4 zipp 3.7.0 pyhd3eb1b0_0
@cgranade An internal user just reported this issue as well - https://github.com/MicrosoftDocs/quantum-docs/issues/534
I believe this has now been fixed by updates to pinned package versions with #685; please feel free to reopen, however, if you observe the issue again. Thank you!
