SyntaxError on poe test when using streamlit

[vanolucas]

Error

The error occurs when running poe test on a Python 3.12 project that imports streamlit.

⬢ [Docker] ❯ poe test
Poe => coverage run
=========================================================================================================================================================================== test session starts ============================================================================================================================================================================
platform linux -- Python 3.12.3, pytest-8.1.1, pluggy-1.5.0 -- /opt/my-package-env/bin/python
cachedir: .pytest_cache
rootdir: /workspaces/my-package
configfile: pyproject.toml
testpaths: src, tests
plugins: typeguard-4.2.1, mock-3.14.0, xdist-3.5.0
collected 0 items / 1 error                                                                                                                                                                                                                                                                                                                                                
run-last-failure: None

================================================================================================================================================================================== ERRORS ==================================================================================================================================================================================
__________________________________________________________________________________________________________________________________________________________________ ERROR collecting src/my_package/app.py __________________________________________________________________________________________________________________________________________________________________
/opt/my-package-env/lib/python3.12/site-packages/_pytest/python.py:520: in importtestmodule
    mod = import_path(
/opt/my-package-env/lib/python3.12/site-packages/_pytest/pathlib.py:584: in import_path
    importlib.import_module(module_name)
/usr/local/lib/python3.12/importlib/__init__.py:90: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
<frozen importlib._bootstrap>:1387: in _gcd_import
    ???
<frozen importlib._bootstrap>:1360: in _find_and_load
    ???
<frozen importlib._bootstrap>:1331: in _find_and_load_unlocked
    ???
<frozen importlib._bootstrap>:935: in _load_unlocked
    ???
/opt/my-package-env/lib/python3.12/site-packages/typeguard/_importhook.py:98: in exec_module
    super().exec_module(module)
<frozen importlib._bootstrap_external>:995: in exec_module
    ???
<frozen importlib._bootstrap>:488: in _call_with_frames_removed
    ???
src/my_package/app.py:3: in <module>
    import streamlit as st
/opt/my-package-env/lib/python3.12/site-packages/streamlit/__init__.py:69: in <module>
    from streamlit.delta_generator import (
/opt/my-package-env/lib/python3.12/site-packages/streamlit/delta_generator.py:49: in <module>
    from streamlit.elements.arrow import ArrowMixin
/opt/my-package-env/lib/python3.12/site-packages/streamlit/elements/arrow.py:22: in <module>
    from streamlit.elements.lib.column_config_utils import (
/opt/my-package-env/lib/python3.12/site-packages/streamlit/elements/lib/column_config_utils.py:23: in <module>
    from streamlit.elements.lib.column_types import ColumnConfig, ColumnType
E     File "/opt/my-package-env/lib/python3.12/site-packages/streamlit/elements/lib/column_types.py", line 488
E       """Configure a link column in ``st.dataframe`` or ``st.data_editor``.
E       ^^^
E   SyntaxError: invalid escape sequence '\.'
------------------------------------------------------------------------------------------------------------------------------------------------------ generated xml file: /workspaces/my-package/reports/pytest.xml -------------------------------------------------------------------------------------------------------------------------------------------------------
========================================================================================================================================================================= short test summary info ==========================================================================================================================================================================
ERROR src/my_package/app.py
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! stopping after 1 failures !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
============================================================================================================================================================================= 1 error in 0.83s =============================================================================================================================================================================
Error: Sequence aborted after failed subtask 'test[0]'

Steps to reproduce

Tested inside WSL2 on Windows 11 version 23H2.

Delete all existing poetry-cookicutter Docker containers and images.

Clone the repo to a local folder:

git clone git@github.com:radix-ai/poetry-cookiecutter.git

Open it with VSCode:

code .

Run VSCode command: Dev Containers: Rebuild Without Cache and Reopen in Container.

The poetry-cookiecutter dev container builds and opens.

Once completely initialized, open VSCode's bash terminal: Terminal: Create New Terminal.

Scaffold a new Python 3.12 package project using cruft:

cruft create -f https://github.com/radix-ai/poetry-cookiecutter

Choose the following cookiecutter values. Here reported in the generated .cruft.json:

{
  "template": "https://github.com/radix-ai/poetry-cookiecutter",
  "commit": "8ab7ee0accff3b9cb0e470bfc925858fc04d1e97",
  "checkout": null,
  "context": {
    "cookiecutter": {
      "project_type": "package",
      "project_name": "My Package",
      "project_description": "A Python package that reticulates splines.",
      "project_url": "https://github.com/user/my-package",
      "author_name": "John Smith",
      "author_email": "john@example.com",
      "python_version": "3.12",
      "development_environment": "strict",
      "with_conventional_commits": "1",
      "with_fastapi_api": "0",
      "with_typer_cli": "0",
      "continuous_integration": "GitHub",
      "private_package_repository_name": "",
      "private_package_repository_url": "",
      "__docker_image": "python:$PYTHON_VERSION-slim",
      "__docstring_style": "NumPy",
      "__project_name_kebab_case": "my-package",
      "__project_name_snake_case": "my_package",
      "_template": "https://github.com/radix-ai/poetry-cookiecutter"
    }
  },
  "directory": null
}

Exit the dev container and close VSCode.

Copy the scaffolded project to another local folder:

cd ..
cp -r poetry-cookiecutter/my-package ./

Navigate to the scaffolded project folder and open it with VSCode:

cd my-package/
code .

Build the project's dev container: run VSCode command: Dev Containers: Rebuild Without Cache and Reopen in Container.

Once completely initialized, open VSCode's bash terminal: Terminal: Create New Terminal.

Add Streamlit as a dependency:

poetry add streamlit

Create a Python file that imports streamlit:
In src/my_package/app.py:

"""A Streamlit app."""

import streamlit as st

Init a git repo:

git init

Run code linting:

poe lint

Run tests:

poe test

[spalster]

Hi, @vanolucas, thanks for submitting this issue! It looks like it's a known issue on Streamlit side in combination with the strict configuration of pytest which is enabled with development_environment=strict.
I see that there's a fix merged already so I expect it to no longer be an issue in the next streamlit release. As a temporary workaround, I'd recommend switching to the simple development environment or remove the line filterwarnings = ["error", "ignore::DeprecationWarning"] in the pyproject.toml which causes pytest to fail on warnings.

[lsorber]

Closed by #237.