Running Python in shell does not find installed packages

• I am on the latest Poetry version.
• I have searched the issues of this repo and believe that this is not a duplicate.
• OS version and name: macOS 10.14
• Poetry version: 0.12.17
• Link of a Gist with the contents of your pyproject.toml file: https://gist.github.com/slhck/5a5dc06d77046a894025d593447bfdc8

Issue

I want to use poetry shell to run python3 with the packages installed via poetry.

When I install the packages and run python3 from the shell, the packages are not found:

➜ poetry init
…
~/Desktop/test via 🐍 3.7.3
➜ poetry add fastapi uvicorn
Creating virtualenv test-py3.7 in /Users/werner/Library/Caches/pypoetry/virtualenvs
Using version ^0.42.0 for fastapi
Using version ^0.10.8 for uvicorn

Updating dependencies
Resolving dependencies... (4.9s)

Writing lock file


Package operations: 9 installs, 0 updates, 0 removals

  - Installing click (7.0)
  - Installing h11 (0.8.1)
  - Installing httptools (0.0.13)
  - Installing pydantic (0.32.2)
  - Installing starlette (0.12.9)
  - Installing uvloop (0.14.0)
  - Installing websockets (8.1)
  - Installing fastapi (0.42.0)
  - Installing uvicorn (0.10.8)

~/Desktop/test via 🐍 3.7.3 took 19s
➜ poetry run python3 -c "import fastapi"
email-validator not installed, email fields will be treated as str.
To install, run: pip install email-validator

~/Desktop/test via 🐍 3.7.3 took 2s
➜ poetry shell
Spawning shell within /Users/werner/Library/Caches/pypoetry/virtualenvs/test-py3.7

~/Desktop/test via test-py3.7 via 🐍 3.7.3
➜ python3 -c "import fastapi"
Traceback (most recent call last):
  File "<string>", line 1, in <module>
ModuleNotFoundError: No module named 'fastapi'

The module is not found when inside the shell, but it is when I use poetry run.

Python 3 is 3.7.3 installed via pyenv:

➜ pyenv versions
  system
  3.6.5
* 3.7.3 (set by PYENV_VERSION environment variable)

Unless I’ve missed something obvious, I think this is the way this tool is intended to be used. I also know pipenv shell does the same, and from the documentation I don’t see any indication that the expected behavior would be different.

[slhck]

I just tried 1.0.0b5 and it works there.

[finswimmer]

Thanks a lot for coming back and reporting! 👍

So I will close this issue.