exh*_*uma 5 python type-hinting mypy
我正在尝试键入检查我的代码的最新版本，并在 vim 和mypy命令行上使用 ALE 插件获得不一致的结果。
更新：在下面@aaron 发表评论后，我在另一台机器上检查了代码，它按预期工作：我在那里遇到的错误比我的主要开发机器上的错误更多。所以 vim 中的 ALE 给了我与另一台机器上的过程相同的结果。我不明白为什么。
两者都应该给我相同的结果，但我注意到 ALE 给我的结果比命令行多。我想知道我在 CLI 调用中做错了什么mypy。
设置和环境来重现我遇到的行为（不需要 ALE）：
4fb26c4e5bpython3 -m venv env./env/bin/pip install -e ../env/bin/pip install mypy现在，使用此环境，对目录进行类型检查会puresnmp产生以下结果：
$ ./env/bin/mypy puresnmp
puresnmp/aio/api/raw.py:505: error: Type signature has too few arguments
puresnmp/api/pythonic.py:239: error: Type signature has too few arguments
puresnmp/api/raw.py:490: error: Type signature has too few arguments
puresnmp/test/asyncmock.py:18: error: 'yield' in async function
Found 4 errors in 4 files (checked 38 source files)
使用./env/bin/mypy puresnmp/**/*.py或./env/bin/mypy -p puresnmp产生与上述相同的报告。
但是，当明确指定文件时，我会收到更多错误（恰好对应于 ALE 错误）：
$ ./env/bin/mypy puresnmp/api/pythonic.py
puresnmp/x690/types.pyi:58: error: Return type "Union[Null, UnknownType]" of "from_bytes" incompatible with return type "Type[bytes]" in supertype "Type"
puresnmp/transport.py:83: error: Argument 1 to "Timeout" has incompatible type "str"; expected "int"
puresnmp/pdu.py:178: error: Argument 2 to "Sequence" has incompatible type "Union[str, bytes, int, datetime, timedelta, None]"; expected "Type[Any]"
puresnmp/pdu.py:217: error: On Python 3 '%s' % b'abc' produces "b'abc'"; use %r if this is a desired behavior
puresnmp/pdu.py:253: error: Argument 2 to "VarBind" has incompatible type "Null"; expected "Union[str, bytes, int, datetime, timedelta, None]"
puresnmp/pdu.py:316: error: Argument 2 to "VarBind" has incompatible type "Null"; expected "Union[str, bytes, int, datetime, timedelta, None]"
puresnmp/pdu.py:320: error: Argument 2 to "Sequence" has incompatible type "Union[str, bytes, int, datetime, timedelta, None]"; expected "Type[Any]"
puresnmp/pdu.py:365: error: On Python 3 '%s' % b'abc' produces "b'abc'"; use %r if this is a desired behavior
puresnmp/api/raw.py:104: error: Incompatible return value type (got "List[Union[ObjectIdentifier, Union[str, bytes, int, datetime, timedelta, None]]]", expected "List[Type[Union[str, bytes, int, datetime, timedelta, None]]]")
puresnmp/api/raw.py:160: error: Argument 1 to "VarBind" has incompatible type "Union[ObjectIdentifier, Union[str, bytes, int, datetime, timedelta, None]]"; expected "Union[ObjectIdentifier, str]"
puresnmp/api/raw.py:160: error: Argument 2 to "VarBind" has incompatible type "Union[ObjectIdentifier, Union[str, bytes, int, datetime, timedelta, None]]"; expected "Union[str, bytes, int, datetime, timedelta, None]"
puresnmp/api/raw.py:164: error: Unsupported left operand type for < ("ObjectIdentifier")
puresnmp/api/raw.py:317: error: Argument 2 to "VarBind" has incompatible type "Type[Union[str, bytes, int, datetime, timedelta, None]]"; expected "Union[str, bytes, int, datetime, timedelta, None]"
puresnmp/api/raw.py:336: error: Incompatible return value type (got "Dict[str, Union[ObjectIdentifier, Union[str, bytes, int, datetime, timedelta, None]]]", expected "Dict[str, Type[Union[str, bytes, int, datetime, timedelta, None]]]")
puresnmp/api/raw.py:460: error: Incompatible types in assignment (expression has type "Union[ObjectIdentifier, Union[str, bytes, int, datetime, timedelta, None]]", target has type "Type[Union[str, bytes, int, datetime, timedelta, None]]")
puresnmp/api/raw.py:490: error: Type signature has too few arguments
puresnmp/api/raw.py:566: error: Argument 1 to "len" has incompatible type "ObjectIdentifier"; expected "Sized"
puresnmp/api/raw.py:570: error: Argument 1 to "tablify" has incompatible type "List[VarBind]"; expected "Iterable[Tuple[Any, Any]]"
puresnmp/api/raw.py:587: error: Argument 1 to "len" has incompatible type "ObjectIdentifier"; expected "Sized"
puresnmp/api/pythonic.py:104: error: Item "str" of "Union[ObjectIdentifier, str, bytes, int, datetime, timedelta, None, Any]" has no attribute "pythonize"
puresnmp/api/pythonic.py:104: error: Item "bytes" of "Union[ObjectIdentifier, str, bytes, int, datetime, timedelta, None, Any]" has no attribute "pythonize"
puresnmp/api/pythonic.py:104: error: Item "int" of "Union[ObjectIdentifier, str, bytes, int, datetime, timedelta, None, Any]" has no attribute "pythonize"
puresnmp/api/pythonic.py:104: error: Item "datetime" of "Union[ObjectIdentifier, str, bytes, int, datetime, timedelta, None, Any]" has no attribute "pythonize"
puresnmp/api/pythonic.py:104: error: Item "timedelta" of "Union[ObjectIdentifier, str, bytes, int, datetime, timedelta, None, Any]" has no attribute "pythonize"
puresnmp/api/pythonic.py:104: error: Item "None" of "Union[ObjectIdentifier, str, bytes, int, datetime, timedelta, None, Any]" has no attribute "pythonize"
puresnmp/api/pythonic.py:154: error: Argument 1 to "VarBind" has incompatible type "Union[ObjectIdentifier, Union[str, bytes, int, datetime, timedelta, None]]"; expected "Union[ObjectIdentifier, str]"
puresnmp/api/pythonic.py:154: error: Item "str" of "Union[ObjectIdentifier, Union[str, bytes, int, datetime, timedelta, None]]" has no attribute "pythonize"
puresnmp/api/pythonic.py:154: error: Item "bytes" of "Union[ObjectIdentifier, Union[str, bytes, int, datetime, timedelta, None]]" has no attribute "pythonize"
puresnmp/api/pythonic.py:154: error: Item "int" of "Union[ObjectIdentifier, Union[str, bytes, int, datetime, timedelta, None]]" has no attribute "pythonize"
puresnmp/api/pythonic.py:154: error: Item "datetime" of "Union[ObjectIdentifier, Union[str, bytes, int, datetime, timedelta, None]]" has no attribute "pythonize"
puresnmp/api/pythonic.py:154: error: Item "timedelta" of "Union[ObjectIdentifier, Union[str, bytes, int, datetime, timedelta, None]]" has no attribute "pythonize"
puresnmp/api/pythonic.py:154: error: Item "object" of "Union[ObjectIdentifier, Union[str, bytes, int, datetime, timedelta, None]]" has no attribute "pythonize"
puresnmp/api/pythonic.py:169: error: Argument 1 to "VarBind" has incompatible type "Union[ObjectIdentifier, Union[str, bytes, int, datetime, timedelta, None]]"; expected "Union[ObjectIdentifier, str]"
puresnmp/api/pythonic.py:169: error: Item "str" of "Union[ObjectIdentifier, Union[str, bytes, int, datetime, timedelta, None]]" has no attribute "pythonize"
puresnmp/api/pythonic.py:169: error: Item "bytes" of "Union[ObjectIdentifier, Union[str, bytes, int, datetime, timedelta, None]]" has no attribute "pythonize"
puresnmp/api/pythonic.py:169: error: Item "int" of "Union[ObjectIdentifier, Union[str, bytes, int, datetime, timedelta, None]]" has no attribute "pythonize"
puresnmp/api/pythonic.py:169: error: Item "datetime" of "Union[ObjectIdentifier, Union[str, bytes, int, datetime, timedelta, None]]" has no attribute "pythonize"
puresnmp/api/pythonic.py:169: error: Item "timedelta" of "Union[ObjectIdentifier, Union[str, bytes, int, datetime, timedelta, None]]" has no attribute "pythonize"
puresnmp/api/pythonic.py:169: error: Item "object" of "Union[ObjectIdentifier, Union[str, bytes, int, datetime, timedelta, None]]" has no attribute "pythonize"
puresnmp/api/pythonic.py:185: error: Argument 1 to "VarBind" has incompatible type "Union[ObjectIdentifier, Union[str, bytes, int, datetime, timedelta, None]]"; expected "Union[ObjectIdentifier, str]"
puresnmp/api/pythonic.py:239: error: Type signature has too few arguments
puresnmp/api/pythonic.py:258: error: The return type of a generator function should be "Generator" or one of its supertypes
puresnmp/api/pythonic.py:272: error: Argument 1 to "len" has incompatible type "ObjectIdentifier"; expected "Sized"
puresnmp/api/pythonic.py:282: error: The return type of a generator function should be "Generator" or one of its supertypes
puresnmp/api/pythonic.py:296: error: Argument 1 to "len" has incompatible type "ObjectIdentifier"; expected "Sized"
Found 45 errors in 5 files (checked 1 source file)
如何解释这种差异？
更重要的是：如何在不手动指定每个文件的情况下获取所有错误？
问题是通过penv.
当我为 ALE/vim 创建虚拟环境时，我将我的 Python 版本设置为与手动运行时不同的版本mypy。
这导致了不同的结果，因为打字在这些版本之间进行了更新。
清理所有内容并确保 Python 版本相同解决了这个问题。