Shell improvements

[DietmarSchwertberger]

This PR should improve wx.py.shell:

• auto-completion on pressing tab
• auto-completion on e.g. import
• auto-completion on e.g. sys.path.a
• automatic calltip on e.g. completion of sys.path.a to sys.path.append(
• calltip also on class instantiation, not only on function calls
• context menu entry "Copy History"

@newville , @komoto48g : would you mind testing?

I started this when I saw the new, improved shell features of the recent Python versions. I was hoping there was a bit more abstraction...

P.S.: I'm testing / developing this on Python 3.12 and 3.14. I think that I'm not using recent features, but need to test.

[RobinD42]

This pull request has been mentioned on Discuss wxPython. There might be relevant details there:

https://discuss.wxpython.org/t/users-of-shell/40437/3

[newville]

@DietmarSchwertberger Thanks for working on this.

On macOS with Python 3.13.13, I get

>>> import wx.py as py
...
 File "..../lib/python3.13/site-packages/wx/py/shell.py", line 28, in <module>
    from _pyrepl import _module_completer
ImportError: cannot import name '_module_completer' from '_pyrepl' (/.../lib/python3.13/_pyrepl/__init__.py)

Sorry, I haven't been able to investigate further.

[DietmarSchwertberger]

Thanks. It seems _pyrepl is available on 3.13, but not _module_completer.
I have modified to check for ModuleNotFoundError and also ImportError.
The full autocompletion including imports is therefore only available on 3.14.

[DietmarSchwertberger]

To be done:

• handle cases like l[1].
• handle .

update: they are ignored now