pyreadline no longer works under Windows 10 with Python 3.10

[dhylands]

pyreadline no longer works under Windows 10 with Python 3.10 but works with python 3.9

See discussion in the forum: https://forum.micropython.org/viewtopic.php?f=15&t=11606

[leycec]

Yuppers. IPython dropped pyreadline seven years ago – and it's been increasingly dead ever since. rshell must now follow IPython's formidable lead by refactoring the codebase to use the ever-popular Python Prompt Toolkit instead.

Fortunately, Python Prompt Toolkit is substantially superior to pyreadline. Unfortunately, Python Prompt Toolkit isn't simply a drop-in replacement for pyreadline; it's really a whole new kettle of CLI fish. Fortunately, rshell only references pyreadline exactly 6 times in its rshell.main module.

So, this refactoring should be trivial – in theory. Someone just needs to get down to brass tacks, roll up their sleeves, and make this happen in 2022 before Python 3.10 goes mainstream. </gulp>

[moefear85]

A temporary fix would be to edit the following file (replace "PYTHON" with the path to your python installation):

PYTHON/Lib/site-packages/pyreadline/py3k_compat.py

then modify line 8 from:

return isinstance(x, collections.Callable)

so it becomes:

return isinstance(x, collections.abc.Callable)

save it, and thats it. when you launch rshell the next time, problem solved. The reason of the problem is that the python library moved the location of "Callable" from the collections module into the "abc" submodule. Thus the outdated pyreadline can't find it.

[leycec]

pyreadline is no longer maintained. Its last commit was seven years ago. Since upstream is dead, upstream won't merge anything – which means the only means of meaningfully applying this change would be for rshell itself to:

1. Vendor (i.e., bundle, embed) pyreadline inside itself.
2. Apply the trivial patch you've helpfully supplied, @moefear85.
3. Maintain this vendored copy of pyreadline in perpetuity.

In the short term, that's probably the sanest solution. In the long term, rshell absolutely should not be vendoring unmaintained and possibly insecure third-party packages inside itself.

Python Prompt Toolkit is still the way.

[gamefunc]

fix pr: #223
win 10 python3.11 build: https://github.com/gamefunc/rshell/releases