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Bug
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Resolution: Fixed
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P2: Important
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6.8.1, 6.8.2, 6.9.0, 6.9.1, 6.8.3
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None
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All
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2809ad352 (dev), 184c566c6 (6.9)
environment details:
OS: Ubuntu 22.04.3 LTS
Python: <=3.10 (tested on 3.10 & 3.9)
PySide6: >=3.8.1 (tested on 6.8.1, 6.8.2, 6.8.3, 6.9.0, 6.9.1)
Description and Examples:
importing PySide6 modifies the built-in typing module, adding Self to it.
A small reproducible example:
import typing print(hasattr(typing, "Self")) import PySide6 # noqa print(hasattr(typing, "Self"))
Python 3.10 hasattr(typing, "Self")= False import PySide6 hasattr(typing, "Self")= True Qt 6.8.1 (x86_64-little_endian-lp64 shared (dynamic) release build; by GCC 10.3.1 20210422 (Red Hat 10.3.1-1)) [Python limited API 3.10.14]
Python 3.10 hasattr(typing, "Self")= False import PySide6 hasattr(typing, "Self")= False Qt 6.8.0 (x86_64-little_endian-lp64 shared (dynamic) release build; by GCC 10.3.1 20210422 (Red Hat 10.3.1-1)) [Python limited API 3.10.14]
I encountered this phenomenon when it broke the usage of another library, cloudphatlib:
>>> import PySide6 >>> import cloudpathlib Traceback (most recent call last): File "<stdin>", line 1, in <module> File ".../lib/python3.10/site-packages/cloudpathlib/__init__.py", line 3, in <module> from .anypath import AnyPath File ".../lib/python3.10/site-packages/cloudpathlib/anypath.py", line 6, in <module> from .cloudpath import InvalidPrefixError, CloudPath File ".../lib/python3.10/site-packages/cloudpathlib/cloudpath.py", line 218, in <module> class CloudPath(metaclass=CloudPathMeta): File ".../lib/python3.10/site-packages/cloudpathlib/cloudpath.py", line 238, in CloudPath cloud_path: Union[str, Self, "CloudPath"], File ".../lib/python3.10/typing.py", line 312, in inner return func(*args, **kwds) File ".../lib/python3.10/typing.py", line 403, in __getitem__ return self._getitem(self, parameters) File ".../lib/python3.10/typing.py", line 515, in Union parameters = tuple(_type_check(p, msg) for p in parameters) File ".../lib/python3.10/typing.py", line 515, in <genexpr> parameters = tuple(_type_check(p, msg) for p in parameters) File ".../lib/python3.10/typing.py", line 171, in _type_check raise TypeError(f"Plain {arg} is not valid as type argument") TypeError: Plain typing.Self is not valid as type argument
Notice that changing the imports order (i.e., importing cloudphatlib first), it works.
- resulted from
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PYSIDE-2846 Using MyPy for Better Stub File Quality
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- Open
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| For Gerrit Dashboard: PYSIDE-3135 | ||||||
|---|---|---|---|---|---|---|
| # | Subject | Branch | Project | Status | CR | V |
| 660155,3 | Avoid using typing.Self due in versions < 3.11 | dev | pyside/pyside-setup | Status: MERGED | +2 | +1 |
| 660317,2 | Avoid using typing.Self due in versions < 3.11 | 6.9 | pyside/pyside-setup | Status: MERGED | +2 | 0 |