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Details

Type: Bug
Resolution: Done
Priority: P4: Low
Fix Version/s: 6.5.0
Affects Version/s: 5.15.15, 6.4
Component/s: PySide
Labels:
None
Environment:
Python 3.10

Platform/s:

Linux/X11
Commits:
95e9f8fd67 (pyside/pyside-setup/dev) f554b60680 (pyside/pyside-setup/6.4) f554b60680 (pyside/tqtc-pyside-setup/6.4) 95e9f8fd67 (pyside/tqtc-pyside-setup/dev) 95e9f8fd67 (pyside/tqtc-pyside-setup/tqtc/dev) f554b60680 (pyside/pyside-setup/6.4.1)

Description

Readline completion in a Python interactive session works correctly with Python 3.9 and earlier, but not with Python 3.10. This means that the default TAB completion of PySide objects no longer lists any attributes.

Thus, in Python 3.9, the expected output is shown:

Python 3.9.15 (main, Oct 19 2022, 02:11:57) [GCC 12.2.0] on linux
>>> from PySide6 import QtCore
>>> import rlcompleter
>>> c = rlcompleter.Completer() 
>>> c.complete('QtCore.', 0) 
'QtCore.ClassInfo('

But in Python 3.10, an exception is raised:

Python 3.10.8 (main, Oct 13 2022, 21:13:48) [GCC 12.2.0] on linux
>>> from PySide6 import QtCore
>>> import rlcompleter
>>> c = rlcompleter.Completer() 
>>> c.complete('QtCore.', 0) 
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python3.10/rlcompleter.py", line 90, in complete
    self.matches = self.attr_matches(text)
  File "/usr/lib/python3.10/rlcompleter.py", line 190, in attr_matches
    matches.append(self._callable_postfix(value, match))
  File "/usr/lib/python3.10/rlcompleter.py", line 102, in _callable_postfix
    if not inspect.signature(val).parameters:
  File "/usr/lib/python3.10/inspect.py", line 3250, in signature
    return Signature.from_callable(obj, follow_wrapped=follow_wrapped,
  File "/usr/lib/python3.10/inspect.py", line 2998, in from_callable
    return _signature_from_callable(obj, sigcls=cls,
  File "/usr/lib/python3.10/inspect.py", line 2423, in _signature_from_callable
    raise TypeError(
TypeError: unexpected object [<Signature (self, parent: typing.Optional[PySide2.QtCore.QObject] = None) -> None>, <Signature (self, paths: typing.Sequence[str], parent: typing.Optional[PySide2.QtCore.QObject] = None) -> None>] in __signature__ attribute