MyPy in CI [WIP]

[adam-urbanczyk]

Just running mypy over the codebase. There are no annotations yet.

EDIT:
I added some annotations in geom.

[codecov]

Codecov Report

Merging #378 into master will decrease coverage by 2.18%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #378      +/-   ##
==========================================
- Coverage   95.50%   93.31%   -2.19%     
==========================================
  Files          19       19              
  Lines        4805     4847      +42     
  Branches        0      483     +483     
==========================================
- Hits         4589     4523      -66     
+ Misses        216      210       -6     
- Partials        0      114     +114     

Impacted Files	Coverage Δ
cadquery/occ_impl/exporters.py	96.44% <100.00%> (-0.59%)	⬇️
cadquery/occ_impl/geom.py	87.71% <100.00%> (-0.92%)	⬇️
cadquery/cq.py	87.41% <0.00%> (-6.68%)	⬇️
tests/__init__.py	87.50% <0.00%> (-6.25%)	⬇️
cadquery/cqgi.py	81.01% <0.00%> (-5.07%)	⬇️
cadquery/occ_impl/importers.py	86.74% <0.00%> (-4.82%)	⬇️
tests/test_importers.py	92.00% <0.00%> (-4.00%)	⬇️
cadquery/occ_impl/shapes.py	90.15% <0.00%> (-1.67%)	⬇️
... and 2 more

---

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[adam-urbanczyk]

@jmwright could you take a look at the changes in geom? I like having type annotations in the code, but I'm curious what other people think.

[jmwright]

@adam-urbanczyk Looks good, but I'm curious what prompted the interest in static typing. There is probably an issue somewhere that led to this, but I can't recall.

[adam-urbanczyk]

#244 (which is now split, so #377 ) and #247 . I strongly believe that we are reaching a point where "static" typing will be helpful. Especially together with something like pyls-mypy

[adam-urbanczyk]

BTW: I'm also experimenting with generating stubs for OCP.

[jmwright]

I strongly believe that we are reaching a point where "static" typing will be helpful.

Ok, +1 for merging this once the checks pass.

BTW: I'm also experimenting with generating stubs for OCP.

Sounds good. Is your work viewable anywhere, or are you just experimenting on your local machine?

[adam-urbanczyk]

Not yet, though the modified tool to make them is pushed: https://github.com/CadQuery/pybind11-stubgen . There are still some fine points related to deploying them.

[adam-urbanczyk]

@jmwright I added the OCP stubs here: https://github.com/CadQuery/OCP-stubs . It was necessary to make this thing work. I did manage to find one bug in the geom.py code that way, I think this will be very helpful in the long run. Do you want to take another look, or should I merge as is?

[jmwright]

I'm good with merging.

[adam-urbanczyk]

OK, if this round passes (black was complaining) I'll merge