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Removed the NoneType which has historically been used to track `Non… #6258

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erictraut
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…eandtype[None]within pyright's logic. The new logic now modelsNonelike any other class and simply usesClassType` to track values of this type. This eliminates a bunch of special-case logic and edge-case bugs.

…e` and `type[None]` within pyright's logic. The new logic now models `None` like any other class and simply uses `ClassType` to track values of this type. This eliminates a bunch of special-case logic and edge-case bugs.
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Diff from mypy_primer, showing the effect of this PR on open source code:

bidict (https://github.com/jab/bidict)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "ref" is incompatible with "None" (reportGeneralTypeIssues)

alectryon (https://github.com/cpitclaudel/alectryon)
-       Type "None" cannot be assigned to type "str" (reportGeneralTypeIssues)
+       "None" is incompatible with "str" (reportGeneralTypeIssues)

spack (https://github.com/spack/spack)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "bool" is incompatible with "None" (reportGeneralTypeIssues)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "bool" is incompatible with "None" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "ModuleSpec" (reportGeneralTypeIssues)
+       "None" is incompatible with "ModuleSpec" (reportGeneralTypeIssues)
-             Type "None" cannot be assigned to type "bool"
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+             "None" is incompatible with "bool"
+       "function" is incompatible with "None" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "bool" (reportGeneralTypeIssues)
+       "None" is incompatible with "bool" (reportGeneralTypeIssues)
-     Type "None" cannot be assigned to type "int" (reportGeneralTypeIssues)
+     "None" is incompatible with "int" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "bool" (reportGeneralTypeIssues)
+       "None" is incompatible with "bool" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "int" (reportGeneralTypeIssues)
+       "None" is incompatible with "int" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "int" (reportGeneralTypeIssues)
+       "None" is incompatible with "int" (reportGeneralTypeIssues)
-     Type "Unknown | syaml_dict | Any | None" cannot be assigned to type "Iterable[Unknown]"
+     Type "Unknown | syaml_dict | Any | None" cannot be assigned to type "Iterable[_T@sorted]"
+       "None" is incompatible with protocol "Iterable[_T@sorted]"
-       "__iter__" is not present (reportGeneralTypeIssues)
+         "__iter__" is not present (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/spack/lib/spack/spack/audit.py:190:74 - error: "__getitem__" method not defined on type "object*" (reportGeneralTypeIssues)
+       "None" is incompatible with protocol "Iterable[str]"
-       "__iter__" is not present (reportGeneralTypeIssues)
+         "__iter__" is not present (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "ArchSpec" (reportGeneralTypeIssues)
+       "None" is incompatible with "ArchSpec" (reportGeneralTypeIssues)
-       "bool" is incompatible with protocol "SupportsRead[str | bytes]"
+       "None" is incompatible with protocol "SupportsRead[str | bytes]"
-   /tmp/mypy_primer/projects/spack/lib/spack/spack/binary_distribution.py:191:69 - error: "None" is not iterable (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/spack/lib/spack/spack/binary_distribution.py:191:69 - error: "None" is not iterable
+     "__iter__" method not defined (reportGeneralTypeIssues)
-   /tmp/mypy_primer/projects/spack/lib/spack/spack/binary_distribution.py:507:69 - error: "None" is not iterable (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/spack/lib/spack/spack/binary_distribution.py:507:69 - error: "None" is not iterable
+     "__iter__" method not defined (reportGeneralTypeIssues)
+       "None" is incompatible with protocol "_ReadableStream"
-       "read" is not present
+         "read" is not present
-       "seek" is not present
+         "seek" is not present
-       "close" is not present (reportGeneralTypeIssues)
+         "close" is not present (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "str" (reportGeneralTypeIssues)
+       "None" is incompatible with "str" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "str" (reportGeneralTypeIssues)
+       "None" is incompatible with "str" (reportGeneralTypeIssues)
-       "syaml_dict" is incompatible with "bool" (reportGeneralTypeIssues)
+       "None" is incompatible with "bool" (reportGeneralTypeIssues)
-       "syaml_dict" is incompatible with "bool" (reportGeneralTypeIssues)
+       "None" is incompatible with "bool" (reportGeneralTypeIssues)
+       "None" is incompatible with protocol "_ReadableStream"
-       "read" is not present
+         "read" is not present
-       "seek" is not present
+         "seek" is not present
-       "close" is not present (reportGeneralTypeIssues)
+         "close" is not present (reportGeneralTypeIssues)
+       "None" is incompatible with protocol "_ReadableStream"
-       "read" is not present
+         "read" is not present
-       "seek" is not present
+         "seek" is not present
-       "close" is not present (reportGeneralTypeIssues)
+         "close" is not present (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "Path" (reportGeneralTypeIssues)
+       "None" is incompatible with "Path" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "str" (reportGeneralTypeIssues)
+       "None" is incompatible with "str" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "Path" (reportGeneralTypeIssues)
+       "None" is incompatible with "Path" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "str" (reportGeneralTypeIssues)
+       "None" is incompatible with "str" (reportGeneralTypeIssues)
-     Type "None" cannot be assigned to type "str" (reportGeneralTypeIssues)
+     "None" is incompatible with "str" (reportGeneralTypeIssues)
-     Type "None" cannot be assigned to type "str" (reportGeneralTypeIssues)
+     "None" is incompatible with "str" (reportGeneralTypeIssues)
+       "None" is incompatible with protocol "_ReadableStream"
-       "read" is not present
+         "read" is not present
-       "seek" is not present
+         "seek" is not present
-       "close" is not present (reportGeneralTypeIssues)
+         "close" is not present (reportGeneralTypeIssues)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "ConfigScope" is incompatible with "None" (reportGeneralTypeIssues)
-           Type "None" cannot be assigned to type "bool"
-       Type cannot be assigned to type "None"
+           "None" is incompatible with "bool"
+       "function" is incompatible with "None"
-           Type "None" cannot be assigned to type "bool"
-       Type cannot be assigned to type "None"
+           "None" is incompatible with "bool"
+       "function" is incompatible with "None"
-           Type "None" cannot be assigned to type "bool"
-       Type cannot be assigned to type "None"
+           "None" is incompatible with "bool"
+       "function" is incompatible with "None"
-     Type "list[Spec] | list[Unknown] | None" cannot be assigned to type "Iterable[Spec]"
+     Type "list[Spec] | list[Unknown] | None" cannot be assigned to type "Iterable[_T@set]"
+       "None" is incompatible with protocol "Iterable[_T@set]"
-       "__iter__" is not present (reportGeneralTypeIssues)
+         "__iter__" is not present (reportGeneralTypeIssues)
-   /tmp/mypy_primer/projects/spack/lib/spack/spack/database.py:1600:23 - error: Argument of type "list[Spec]" cannot be assigned to parameter "__iterable" of type "Iterable[SupportsRichComparisonT@sorted]" in function "sorted"
-     "list[Spec]" is incompatible with "Iterable[SupportsRichComparisonT@sorted]"
-       Type parameter "_T_co@Iterable" is covariant, but "Spec" is not a subtype of "SupportsRichComparisonT@sorted"
-         Type "Spec" cannot be assigned to type "SupportsRichComparison"
-           Type "Spec" cannot be assigned to type "SupportsRichComparison"
-             "Spec" is incompatible with protocol "SupportsDunderLT[Any]"
-             "Spec" is incompatible with protocol "SupportsDunderGT[Any]" (reportGeneralTypeIssues)
-           Type "None" cannot be assigned to type "bool"
-       Type cannot be assigned to type "None"
+           "None" is incompatible with "bool"
+       "function" is incompatible with "None"
-           Type "None" cannot be assigned to type "bool"
-       Type cannot be assigned to type "None"
+           "None" is incompatible with "bool"
+       "function" is incompatible with "None"
-       Type "None" cannot be assigned to type "str" (reportGeneralTypeIssues)
+       "None" is incompatible with "str" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "str" (reportGeneralTypeIssues)
+       "None" is incompatible with "str" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "str" (reportGeneralTypeIssues)
+       "None" is incompatible with "str" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "str" (reportGeneralTypeIssues)
+       "None" is incompatible with "str" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "str" (reportGeneralTypeIssues)
+       "None" is incompatible with "str" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "bool" (reportGeneralTypeIssues)
+       "None" is incompatible with "bool" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "BaseException" (reportGeneralTypeIssues)
+       "None" is incompatible with "BaseException" (reportGeneralTypeIssues)
+       "None" is incompatible with protocol "SupportsRead[AnyStr@copyfileobj]"
-       "read" is not present (reportGeneralTypeIssues)
+         "read" is not present (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "str" (reportGeneralTypeIssues)
+       "None" is incompatible with "str" (reportGeneralTypeIssues)
+       "None" is incompatible with protocol "SupportsRead[AnyStr@copyfileobj]"
-       "read" is not present (reportGeneralTypeIssues)
+         "read" is not present (reportGeneralTypeIssues)
+       "None" is incompatible with protocol "SupportsRead[AnyStr@copyfileobj]"
-       "read" is not present (reportGeneralTypeIssues)
+         "read" is not present (reportGeneralTypeIssues)
+       "None" is incompatible with protocol "SupportsIndex"
-       "__index__" is not present (reportGeneralTypeIssues)

... (truncated 449 lines) ...

koda-validate (https://github.com/keithasaurus/koda-validate)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "Coercer[A@coercer]" is incompatible with "None" (reportGeneralTypeIssues)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "Coercer[A@coercer]" is incompatible with "None" (reportGeneralTypeIssues)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "Coercer[A@coercer]" is incompatible with "None" (reportGeneralTypeIssues)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "Coercer[A@coercer]" is incompatible with "None" (reportGeneralTypeIssues)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "Coercer[A@coercer]" is incompatible with "None" (reportGeneralTypeIssues)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "Coercer[A@coercer]" is incompatible with "None" (reportGeneralTypeIssues)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "Coercer[A@coercer]" is incompatible with "None" (reportGeneralTypeIssues)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "Coercer[A@coercer]" is incompatible with "None" (reportGeneralTypeIssues)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "Coercer[A@coercer]" is incompatible with "None" (reportGeneralTypeIssues)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "Coercer[A@coercer]" is incompatible with "None" (reportGeneralTypeIssues)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "Coercer[A@coercer]" is incompatible with "None" (reportGeneralTypeIssues)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "Coercer[A@coercer]" is incompatible with "None" (reportGeneralTypeIssues)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "Coercer[A@coercer]" is incompatible with "None" (reportGeneralTypeIssues)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "Coercer[A@coercer]" is incompatible with "None" (reportGeneralTypeIssues)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "Coercer[A@coercer]" is incompatible with "None" (reportGeneralTypeIssues)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "Coercer[A@coercer]" is incompatible with "None" (reportGeneralTypeIssues)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "Coercer[A@coercer]" is incompatible with "None" (reportGeneralTypeIssues)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "Coercer[A@coercer]" is incompatible with "None" (reportGeneralTypeIssues)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "Coercer[A@coercer]" is incompatible with "None" (reportGeneralTypeIssues)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "Coercer[A@coercer]" is incompatible with "None" (reportGeneralTypeIssues)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "Coercer[A@coercer]" is incompatible with "None" (reportGeneralTypeIssues)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "Coercer[A@coercer]" is incompatible with "None" (reportGeneralTypeIssues)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "Coercer[A@coercer]" is incompatible with "None" (reportGeneralTypeIssues)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "Coercer[A@coercer]" is incompatible with "None" (reportGeneralTypeIssues)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "Coercer[A@coercer]" is incompatible with "None" (reportGeneralTypeIssues)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "Coercer[A@coercer]" is incompatible with "None" (reportGeneralTypeIssues)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "Coercer[A@coercer]" is incompatible with "None" (reportGeneralTypeIssues)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "Coercer[A@coercer]" is incompatible with "None" (reportGeneralTypeIssues)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "Coercer[A@coercer]" is incompatible with "None" (reportGeneralTypeIssues)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "Coercer[A@coercer]" is incompatible with "None" (reportGeneralTypeIssues)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "Coercer[A@coercer]" is incompatible with "None" (reportGeneralTypeIssues)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "Coercer[A@coercer]" is incompatible with "None" (reportGeneralTypeIssues)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "Coercer[A@coercer]" is incompatible with "None" (reportGeneralTypeIssues)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "Coercer[A@coercer]" is incompatible with "None" (reportGeneralTypeIssues)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "Coercer[A@coercer]" is incompatible with "None" (reportGeneralTypeIssues)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "Coercer[A@coercer]" is incompatible with "None" (reportGeneralTypeIssues)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "Coercer[A@coercer]" is incompatible with "None" (reportGeneralTypeIssues)

steam.py (https://github.com/Gobot1234/steam.py)
+   /tmp/mypy_primer/projects/steam.py/steam/http.py:225:28 - error: Argument of type "AsyncGenerator[User, None]" cannot be assigned to parameter "__i" of type "SupportsAnext[_T@anext]" in function "anext"
+     "AsyncGenerator[User, None]" is incompatible with protocol "SupportsAnext[None]"
+       "__anext__" is an incompatible type
+         Type "() -> Awaitable[User]" cannot be assigned to type "() -> Awaitable[_T_co@SupportsAnext]"
+           Function return type "Awaitable[User]" is incompatible with type "Awaitable[_T_co@SupportsAnext]"
+             "Awaitable[User]" is incompatible with "Awaitable[_T_co@SupportsAnext]" (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/steam.py/steam/http.py:225:58 - error: Argument of type "None" cannot be assigned to parameter "default" of type "_VT@anext" in function "anext"
+     "None" is incompatible with "User" (reportGeneralTypeIssues)
- 7929 errors, 22 warnings, 0 informations 
+ 7931 errors, 22 warnings, 0 informations 

Tanjun (https://github.com/FasterSpeeding/Tanjun)
-           Type "None" cannot be assigned to type "Coroutine[Any, Any, None]" (reportGeneralTypeIssues)
+           "None" is incompatible with "Coroutine[Any, Any, None]" (reportGeneralTypeIssues)

freqtrade (https://github.com/freqtrade/freqtrade)
-       Type "None" cannot be assigned to type "float" (reportGeneralTypeIssues)
+       "None" is incompatible with "float" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "float" (reportGeneralTypeIssues)
+       "None" is incompatible with "float" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "float" (reportGeneralTypeIssues)
+       "None" is incompatible with "float" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "float" (reportGeneralTypeIssues)
+       "None" is incompatible with "float" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "str" (reportGeneralTypeIssues)
+       "None" is incompatible with "str" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "str" (reportGeneralTypeIssues)
+       "None" is incompatible with "str" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "Path" (reportGeneralTypeIssues)
+       "None" is incompatible with "Path" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "int" (reportGeneralTypeIssues)
+       "None" is incompatible with "int" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "int" (reportGeneralTypeIssues)
+       "None" is incompatible with "int" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "str" (reportGeneralTypeIssues)
+       "None" is incompatible with "str" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "str" (reportGeneralTypeIssues)
+       "None" is incompatible with "str" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "float" (reportGeneralTypeIssues)
+       "None" is incompatible with "float" (reportGeneralTypeIssues)
+         "None" is incompatible with protocol "Iterator[_T_co@contextmanager]"
-         "__next__" is not present
+           "__next__" is not present
-         "__iter__" is not present (reportGeneralTypeIssues)
+           "__iter__" is not present (reportGeneralTypeIssues)
-     Type "None" cannot be assigned to type "RPC" (reportGeneralTypeIssues)
+     "None" is incompatible with "RPC" (reportGeneralTypeIssues)

operator (https://github.com/canonical/operator)
+ /tmp/mypy_primer/projects/operator/test/test_main.py
+   /tmp/mypy_primer/projects/operator/test/test_main.py:369:42 - error: Cannot access member "_data" for type "StoredState"
+     Member "_data" is unknown (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/operator/test/test_main.py:369:35 - error: Type of "_data" is unknown (reportUnknownMemberType)
+   /tmp/mypy_primer/projects/operator/test/test_main.py:369:35 - error: Type of "handle" is unknown (reportUnknownMemberType)
+   /tmp/mypy_primer/projects/operator/test/test_main.py:369:35 - error: Type of "path" is unknown (reportUnknownMemberType)
+   /tmp/mypy_primer/projects/operator/test/test_main.py:369:35 - error: Argument type is unknown
+     Argument corresponds to parameter "handle_path" in function "save_snapshot" (reportUnknownArgumentType)
+   /tmp/mypy_primer/projects/operator/test/test_main.py:374:16 - error: Expression of type "StoredState | StoredStateData" cannot be assigned to return type "BoundStoredState | StoredStateData" (reportGeneralTypeIssues)
- 56 errors, 0 warnings, 0 informations 
+ 62 errors, 0 warnings, 0 informations 

pydantic (https://github.com/samuelcolvin/pydantic)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "ellipsis" is incompatible with "None" (reportGeneralTypeIssues)

pyp (https://github.com/hauntsaninja/pyp)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "bytes" is incompatible with "None" (reportGeneralTypeIssues)

discord.py (https://github.com/Rapptz/discord.py)
-       Type "None" cannot be assigned to type "str" (reportGeneralTypeIssues)
+       "None" is incompatible with "str" (reportGeneralTypeIssues)

dd-trace-py (https://github.com/DataDog/dd-trace-py)
-       Type "None" cannot be assigned to type "ModuleSpec" (reportGeneralTypeIssues)
+       "None" is incompatible with "ModuleSpec" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "int"
-       Type "None" cannot be assigned to type "str"
-       Type "None" cannot be assigned to type "bytes"
+       "None" is incompatible with "int"
+       "None" is incompatible with "str"
+       "None" is incompatible with "bytes"
+       "None" is incompatible with protocol "PathLike[str]"
-       "__fspath__" is not present
+         "__fspath__" is not present
+       "None" is incompatible with protocol "PathLike[bytes]"
-       "__fspath__" is not present (reportGeneralTypeIssues)
+         "__fspath__" is not present (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "int"
-       Type "None" cannot be assigned to type "str"
-       Type "None" cannot be assigned to type "bytes"
+       "None" is incompatible with "int"
+       "None" is incompatible with "str"
+       "None" is incompatible with "bytes"
+       "None" is incompatible with protocol "PathLike[str]"
-       "__fspath__" is not present
+         "__fspath__" is not present
+       "None" is incompatible with protocol "PathLike[bytes]"
-       "__fspath__" is not present (reportGeneralTypeIssues)
+         "__fspath__" is not present (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "str"
-       Type "None" cannot be assigned to type "bytes"
+       "None" is incompatible with "str"
+       "None" is incompatible with "bytes"
+       "None" is incompatible with protocol "PathLike[str]"
-       "__fspath__" is not present
+         "__fspath__" is not present
+       "None" is incompatible with protocol "PathLike[bytes]"
-       "__fspath__" is not present (reportGeneralTypeIssues)
+         "__fspath__" is not present (reportGeneralTypeIssues)
+     "None" is incompatible with protocol "SupportsNext[_T@next]"
-     "__next__" is not present (reportGeneralTypeIssues)
+       "__next__" is not present (reportGeneralTypeIssues)
+     "None" is incompatible with protocol "SupportsNext[_T@next]"
-     "__next__" is not present (reportGeneralTypeIssues)
+       "__next__" is not present (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "str" (reportGeneralTypeIssues)
+       "None" is incompatible with "str" (reportGeneralTypeIssues)
-     Type "None" cannot be assigned to type "bool" (reportGeneralTypeIssues)
+     "None" is incompatible with "bool" (reportGeneralTypeIssues)
-     Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+     "dict[Unknown, Unknown]" is incompatible with "None" (reportGeneralTypeIssues)
-   /tmp/mypy_primer/projects/dd-trace-py/ddtrace/appsec/_metrics.py:75:59 - error: "None" is not iterable (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/dd-trace-py/ddtrace/appsec/_metrics.py:75:59 - error: "None" is not iterable
+     "__iter__" method not defined (reportGeneralTypeIssues)
-     Type "None" cannot be assigned to type "ddwaf_context_capsule" (reportGeneralTypeIssues)
+     "None" is incompatible with "ddwaf_context_capsule" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "str" (reportGeneralTypeIssues)
+       "None" is incompatible with "str" (reportGeneralTypeIssues)
-       Type cannot be assigned to type "None" (reportGeneralTypeIssues)
+       "Literal[',:']" is incompatible with "None" (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/dd-trace-py/ddtrace/commands/ddtrace_run.py:141:12 - error: "None" is not iterable
+     "__iter__" method not defined (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "str" (reportGeneralTypeIssues)
+       "None" is incompatible with "str" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "Mapping[str, str]" (reportGeneralTypeIssues)
+       "None" is incompatible with "Mapping[str, str]" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "str" (reportGeneralTypeIssues)
+       "None" is incompatible with "str" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "str" (reportGeneralTypeIssues)
+       "None" is incompatible with "str" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "str" (reportGeneralTypeIssues)
+       "None" is incompatible with "str" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "Pattern[Unknown]" (reportGeneralTypeIssues)
+       "None" is incompatible with "Pattern[Unknown]" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "str" (reportGeneralTypeIssues)
+       "None" is incompatible with "str" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "Dict[str, str]" (reportGeneralTypeIssues)
+       "None" is incompatible with "Dict[str, str]" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "str" (reportGeneralTypeIssues)
+       "None" is incompatible with "str" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "str" (reportGeneralTypeIssues)
+       "None" is incompatible with "str" (reportGeneralTypeIssues)
+       "None" is incompatible with "Dict[_TagNameType, Any]" (reportGeneralTypeIssues)
-       "Dict[str, str]" is incompatible with "Dict[_TagNameType, Any]"
-         Type parameter "_KT@dict" is invariant, but "str" is not the same as "_TagNameType" (reportGeneralTypeIssues)
+       "None" is incompatible with "Dict[_TagNameType, Any]" (reportGeneralTypeIssues)
-       "Dict[str, str]" is incompatible with "Dict[_TagNameType, Any]"
-         Type parameter "_KT@dict" is invariant, but "str" is not the same as "_TagNameType" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "Pin" (reportGeneralTypeIssues)
+       "None" is incompatible with "Pin" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "str" (reportGeneralTypeIssues)
+       "None" is incompatible with "str" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "str" (reportGeneralTypeIssues)
+       "None" is incompatible with "str" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "Pin" (reportGeneralTypeIssues)
+       "None" is incompatible with "Pin" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "str" (reportGeneralTypeIssues)
+       "None" is incompatible with "str" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "str" (reportGeneralTypeIssues)
+       "None" is incompatible with "str" (reportGeneralTypeIssues)
-     Type "None" cannot be assigned to type "str" (reportGeneralTypeIssues)
+     "None" is incompatible with "str" (reportGeneralTypeIssues)
-     Type "None" cannot be assigned to type "str" (reportGeneralTypeIssues)
+     "None" is incompatible with "str" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "Pin" (reportGeneralTypeIssues)
+       "None" is incompatible with "Pin" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "str" (reportGeneralTypeIssues)
+       "None" is incompatible with "str" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "List[Any]" (reportGeneralTypeIssues)
+       "None" is incompatible with "List[Any]" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "str" (reportGeneralTypeIssues)
+       "None" is incompatible with "str" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "str" (reportGeneralTypeIssues)
+       "None" is incompatible with "str" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "str" (reportGeneralTypeIssues)
+       "None" is incompatible with "str" (reportGeneralTypeIssues)
-       Type "None" cannot be assigned to type "Text" (reportGeneralTypeIssues)
+       "None" is incompatible with "Text" (reportGeneralTypeIssues)
+       "None" is incompatible with "Dict[_TagNameType, Any]" (reportGeneralTypeIssues)
-       "Dict[str, str]" is incompatible with "Dict[_TagNameType, Any]"
-         Type parameter "_KT@dict" is invariant, but "str" is not the same as "_TagNameType" (reportGeneralTypeIssues)
+       "None" is incompatible with "Dict[_TagNameType, Any]" (reportGeneralTypeIssues)

... (truncated 159 lines) ...```

@erictraut erictraut closed this Oct 29, 2023
@erictraut erictraut deleted the nonePart3 branch October 29, 2023 08:06
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