tedivm/paracelsus

How to run the cli when I don't have a package/module set up?

justintime opened this issue · 6 comments

justintime commented

I have a python setup where I've got some relatively simple scripts that interact with a fairly complex database that I've wrapped with SQLAlchemy. Here's the structure:

working dir with script1.py, script2.py
|--- db/
|    |--- __init__.py (empty)
|    |--- models.py

No matter what I've tried to pass to paracelsus on the command line, I can't get it to load my base class. Any ideas on what I can do to use this tool?

tedivm commented

What file contains the base model class, and what is it named?

justintime commented

My original post had some bad formatting, I updated it to make the structure clearer.

To answer your question, my models.py contains my Base class:

class Base(DeclarativeBase):
    pass
tedivm commented

What's the exact command you ran and the output?

justintime commented 
(venv) justine@mbp python % paracelsus graph db.models:Base
Traceback (most recent call last):

  File "/Users/justine/development/project-code/python/venv/bin/paracelsus", line 8, in <module>
    sys.exit(app())
             ^^^^^

  File "/Users/justine/development/project-code/python/venv/lib/python3.12/site-packages/paracelsus/cli.py", line 94, in graph
    get_graph_string(

  File "/Users/justine/development/project-code/python/venv/lib/python3.12/site-packages/paracelsus/cli.py", line 44, in get_graph_string
    base_module = importlib.import_module(module_path)
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

  File "/opt/homebrew/Cellar/python@3.12/3.12.2_1/Frameworks/Python.framework/Versions/3.12/lib/python3.12/importlib/__init__.py", line 90, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

  File "<frozen importlib._bootstrap>", line 1387, in _gcd_import

  File "<frozen importlib._bootstrap>", line 1360, in _find_and_load

  File "<frozen importlib._bootstrap>", line 1310, in _find_and_load_unlocked

  File "<frozen importlib._bootstrap>", line 488, in _call_with_frames_removed

  File "<frozen importlib._bootstrap>", line 1387, in _gcd_import

  File "<frozen importlib._bootstrap>", line 1360, in _find_and_load

  File "<frozen importlib._bootstrap>", line 1324, in _find_and_load_unlocked

ModuleNotFoundError: No module named 'db'

(venv) justine@mbp python % ls db
__init__.py	__pycache__	models.py
tedivm commented

Thanks for reporting!

This could be resolved with the python-dir option, like so:

paracelsus graph db.models:Base --python-dir=.

That being said I think it makes sense to add the current working directory there automatically, so pull request #6 added that small change in. If you upgrade to the latest release your command should work without any changes.

justintime commented

Excellent, thanks so much. I can verify 0.3.0 works for me!

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