我正在尝试使用[vi]和the latest revision of my code的ALE插件对mypy进行类型检查并获得不一致的结果。
在下面@aaron的注释之后，我在另一台机器上签出了代码，它可以按预期工作：在那儿，我在主开发机器上遇到了更多错误。因此，vim内的ALE给我的结果与另一台机器上的过程相同。而且我不明白为什么。
两者应该都给了我相同的结果，但是我注意到ALE比命令行给我更多的结果。而且我想知道mypy的CLI调用在做错什么。
设置环境以重现我所遇到的行为（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puresnmp进行类型检查将产生以下结果：
$ ./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会产生与上面相同的报告。
但是，当明确指定文件时，我得到了更多的错误（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得到所有错误？
我相信默认情况下，当您传递文件夹时，对于mypy，它表示scan this package。因此，它遵循进口。 （本例为./env/bin/mypy puresnmp）
[当您将python文件列表作为args传递时-它将扫描文件列表。
在文档网站https://mypy.readthedocs.io/en/stable/command_line.html#cmdoption-mypy-follow-imports上查看更多详细信息
https://mypy.readthedocs.io/en/stable/running_mypy.html#following-imports
mypy我认为您应该能够在文件夹中的所有python文件上运行该实用程序，您可以像./env/bin/mypy $(find puresnmp -name "*.py")一样运行它。>