Mailman 3 February 2023 - pypy-dev

Re: Injecting an exception into another thread
by Audrey Dutcher May 10, 2023

May 10, 2023

Hi! Sorry for the delay, I didn't realize I needed to be subscribed to the mailing list to participate in conversations. My use case is that I have a gui application which runs arbitrary tasks as background threads, and needs to provide a cancel button to interrupt them. The tasks are often legacy code and/or are very difficult to find reasonable points to insert checks for interruption. Another use case would be implementing a python shell in a gui. If you want to maintain responsiveness while commands execute, they must be able to run in another thread (or another process, but this is not ideal if the shell is supposed to interact with the internals of your application). Interrupting lines with ctrl-c requires being able to send an exception to worker threads. Hope this helps! Thanks, - Audrey

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May 4, 2023

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Windows support needs work
by Matti Picus Feb. 12, 2023

Feb. 12, 2023

While it basically works, PyPy's support for windows is not great: - The winconsoleio crashes and has been disabled (the winconsoleio-debug branch was last touched in July 2020), leaving PyPy with a suboptimal console experience. The unicode rendering does not work properly, so things like "rich" print out random ascii art. [0] - There is a problem with the posix interfaces. Things like os.listdir(dir-as-bytes) return slightly different results on CPython and on PyPy. This has made it difficult to support the missing `os.symlink` and `os.readlink`, which are becoming more popular as support for symlinks in windows improves. [1] - The only reason we still have unicode strings in RPython is to support windows (see uses of space.realunicode_w). This makes even starting a RPython3 port much more difficult. It probably also slows down windows performance. - The work to create a windows installer was never finished (the windowsinstaller branch was last touched in Nov 2019) - There are builds of PyPy on windows at conda-forge, but they seem to be almost broken [2] How can we find contributors or sponsors to improve PyPy support for windows? Matti [0] issues 2999, 3767, 3768, [1] issues 3225, 2753, 3506, 3535, 3641, 3479, 3434 [2] https://github.com/conda-forge/pypy3.6-feedstock/issues/101

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Is it possible to create a compiler for a Python-like compiled language using RPython?
by Marco Sulla Feb. 5, 2023

Feb. 5, 2023

Hello, I would create a Python-like, static compiled language. I know I can create a lexer and parser with ANTRL for Python, but Python is interpreted. Can I use RPython as a base? How can I start to play with it?

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Using pypy sandboxing with Python 3.x
by Sidrah Sayyad Feb. 2, 2023

Feb. 2, 2023

Hi team, I came across the PyPy documentation at https://doc.pypy.org/en/latest/sandbox.html and was particularly interested in trying out the sandboxing feature. However, the documentation seems to be old and probably works for python2.x. I downloaded PyPy 3.8 from https://www.pypy.org/download.html for Linux x86 64 bit. Is sandboxing available here ? If yes, how can one use it ? Regards, Sidrah.

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