Details
P4: Low Description
While trying to use PySide2 in ipython, I discovered:
from PySide2 import QtCore, QtWidgets, QtGui QtCore.<tab>
Will produce a long list of printed exceptions to stdout:
Exception: [Errno 2] No such file or directory: '/Users/davidh/anaconda/envs/vispy_test_pyside2/lib/python3.6/site-packages/PySide2/support/signature/loader.py' Traceback (most recent call last): File "/Users/davidh/anaconda/envs/vispy_test_pyside2/lib/python3.6/site-packages/jedi/cache.py", line 140, in wrapper return dct[key] KeyError: ((), frozenset()) During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/Users/davidh/anaconda/envs/vispy_test_pyside2/lib/python3.6/site-packages/jedi/cache.py", line 140, in wrapper return dct[key] KeyError: (('get_signature_params',), frozenset()) During handling of the above exception, another exception occurred: Traceback (most recent call last): File "<string>", line 7, in bootstrap FileNotFoundError: [Errno 2] No such file or directory: '/Users/davidh/anaconda/envs/vispy_test_pyside2/lib/python3.6/site-packages/PySide2/support/signature/loader.py'
{}
I've discussed this with the developers of "jedi", the library that helps with tab completion in ipython, to narrow the issue down to where it looks like this may be an issue in PySide2. You can see the discussion with them here: https://github.com/davidhalter/jedi/issues/1294
The end result of the conversation points to this piece of pyside/shiboken: https://github.com/pyside/pyside2-setup/blob/ff8b698d3547b39ba20c97a4c68881a4a789b211/sources/shiboken2/libshiboken/signature.cpp#L403
Note: I don't have access to PySide2 5.12 as 5.6 is the only version available with conda-forge.