🚸 Set up Django on every import of lamindb via a "mock instance"

[falexwolf]

The change here should allow us to eliminate the conditional import in the lamindb root module.

• 🚸 Always import the entire public API & enable switching instances in the same Python session lamindb#2851

This PR fixes several issues with the reset logic introduced here:

• ✨ Allow re-connecting through re-configuring Django in the same Python process #1046

Stale class issue: https://claude.ai/share/b4b3dcb5-4685-42dc-8e32-50851d41c5ac

[codecov]

Codecov Report

Attention: Patch coverage is 88.15789% with 9 lines in your changes missing coverage. Please review.

Project coverage is 85.21%. Comparing base (6864293) to head (a943bcc).

Files with missing lines	Patch %	Lines
lamindb_setup/_check_setup.py	86.36%	3 Missing ⚠️
lamindb_setup/_cache.py	33.33%	2 Missing ⚠️
lamindb_setup/_connect_instance.py	92.59%	2 Missing ⚠️
lamindb_setup/core/_settings.py	88.88%	1 Missing ⚠️
lamindb_setup/core/_settings_instance.py	83.33%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1063      +/-   ##
==========================================
+ Coverage   85.10%   85.21%   +0.10%     
==========================================
  Files          45       45              
  Lines        3747     3794      +47     
==========================================
+ Hits         3189     3233      +44     
- Misses        558      561       +3     

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[github-actions]

🚀 Deployed on https://68651945cba1fa6d24b94255--lamindb-setup-htry.netlify.app

[Koncopd]

i don't think it should always reset, it should do the reset only on re-connect. Also not clear why importlib.reload deosn't do this already.

[falexwolf]

It is ready!

[Koncopd]

I see the the tests still fail on lamindb.

[falexwolf]

I see the the tests still fail on lamindb.

That was something trivial related to refactoring the error behavior.

[Koncopd]

Got it, I will check tmr morning.

[falexwolf]

I think that very likely we can also eliminate the whole disable_auto_connect() logic if we eliminate the whole "module reload" logic. All of this stuff is only there because of how complicated the import of lamindb was.

But these simplifications can also go into another PR, I guess. 🤔