ImportError: cannot import name 'TopTools_ListOfShape' from 'OCC.Core.TopTools' after build from source

[zhouyc98]

I have installed pythonocc from source following the INSTALL.md. (I'm using macOS so I adjust some config and finally get it installed). After I installed, I run the simple test and it is ok; however, the unit test (test/run_tests.py) is failed and gives the following error message:

Traceback (most recent call last):
  File "/Users/ZhouYucheng/Downloads/pythonocc-core/test/run_tests.py", line 22, in <module>
    import core_wrapper_features_unittest
  File "/Users/ZhouYucheng/Downloads/pythonocc-core/test/core_wrapper_features_unittest.py", line 100, in <module>
    from OCC.Core.TopTools import (
ImportError: cannot import name 'TopTools_ListOfShape' from 'OCC.Core.TopTools' (/opt/homebrew/lib/python3.9/site-packages/OCC/Core/TopTools.py)

I opened the installed "OCC/Core/TopTools.py" file and found that it has nothing matched TopTools_ListOfShape. But it do have a class named TopTools_ListOfListOfShape. That's weird. Is it a typo bug?

I'm using MacBookPro with M1Pro and macOS 14.3, python3.9, pythonocc-7.7.2 (I git cloned this repo and checkout to c8f1d571 which is tagged with 7.7.2), opencascade-7.7.2_3, and SWIG-4.2.1.

[zhouyc98]

I found it is bug relevant to SWIG version (like #1161). I finally get it worked by installing pythonocc-7.4.1, OCC-7.4.0, and SWIG-3.0.12

[tpaviot]

If you want to compile the current master branch, swig-4.1.x is required, no need to downgrade to previous pythonocc releases

[zhouyc98]

@tpaviot Thank you for your reply. I now tried swig-4.1.1 with the latest pythonocc and it worked! Thanks!

[tpaviot]

Fixed in current master branch