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Editorial Team
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Asked: 2026-05-13T10:08:38+00:00

What experiences do you have with Stackless Python and PyQt? Issues i would be

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What experiences do you have with Stackless Python and PyQt?

Issues i would be happy if people address:

  1. Compilation of PyQt for Stackless: does PyQt need to be compiled especially for Stackless? is the compilation smooth? problems with bindings etc.

  2. Stability: any unexpected crashes, freezes, pauses and other weirdities?

  3. Memory Management: any hints of memory leaks. comparison of RAM needed for a Stackless/Plain Vanilla PyQt applications

  4. Software Engineering Empowerment: very short outline of flow-of-control models for Stackless-powered PyQt applications

  5. Lessons learned: any painful lesson learned, traps to be avoided, problems to tackle you might have experienced

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1 Answer

  1. Editorial Team

    I tried to go down this path several months ago and decided it was not worth the effort.

    I was able to run a binary install of PyQt (on Windows) against a stackless version of Python, but I found that I had to manually go in and change some of the files. I was getting an error message (sorry, I forget what it was), and google search led to a solution from several years ago. Newer code did not include the old fix, so the change was not too difficult and (if I remember correctly) it was in python, so no recompile was necessary.

    But that was a deal breaker for me. Qt updates come out regularly, as do updates to PyQt, and I didn’t want to be continually fixing the code. Stackless and PyQt are simply not used enough together to be checked out thoroughly. I found the risk of difficult to debug issues pretty high. This is especially true given the author of stackless has moved on to PyPy. Let me apologize in advance – I wish I had the references I found for the author stopping development on stackless python and more detail on the errors I had to fix – I wasn’t expecting to regurgitate the details on Stack Overflow.

    So I chose to run PyQt on a vanilla Python instead of stackless.

    BTW, I also thought that mixing signals/slots with stackless code would be confusing, as they are completely different methods of solving multi-threading problems.

    Good luck!

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