Started to formalize rules for narrowing Any. Needs more work.

[erictraut]

No description provided.

[github-actions]

Diff from mypy_primer, showing the effect of this PR on open source code:

steam.py (https://github.com/Gobot1234/steam.py)
-   /tmp/mypy_primer/projects/steam.py/scripts/blacken_docs_correctly.py:37:19 - error: Type of "get" is unknown (reportUnknownMemberType)
-   /tmp/mypy_primer/projects/steam.py/scripts/blacken_docs_correctly.py:37:19 - error: Type of "get" is partially unknown
-     Type of "get" is "Unknown | Overload[(__key: str, /) -> (Any | None), (__key: str, __default: Any | _T@get, /) -> (Any | _T@get)]" (reportUnknownMemberType)
-   /tmp/mypy_primer/projects/steam.py/scripts/blacken_docs_correctly.py:38:66 - error: Type of "get" is unknown (reportUnknownMemberType)
-   /tmp/mypy_primer/projects/steam.py/scripts/blacken_docs_correctly.py:38:66 - error: Type of "get" is partially unknown
-     Type of "get" is "Unknown | Overload[(__key: str, /) -> (Any | None), (__key: str, __default: Any | _T@get, /) -> (Any | _T@get)]" (reportUnknownMemberType)
-   /tmp/mypy_primer/projects/steam.py/scripts/blacken_docs_correctly.py:38:42 - error: Type of "upper" is unknown (reportUnknownMemberType)
-   /tmp/mypy_primer/projects/steam.py/scripts/blacken_docs_correctly.py:38:42 - error: Type of "upper" is partially unknown
-     Type of "upper" is "Unknown | Any" (reportUnknownMemberType)
+   /tmp/mypy_primer/projects/steam.py/steam/gateway.py:843:55 - error: Operator "in" not supported for types "int" and "Iterable[ID64]" (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/steam.py/tests/unit/test_commands.py:172:62 - error: "qualified_name" is not a known member of "None" (reportOptionalMemberAccess)
- 8737 errors, 49 warnings, 0 informations 
+ 8733 errors, 49 warnings, 0 informations 

koda-validate (https://github.com/keithasaurus/koda-validate)
+   /tmp/mypy_primer/projects/koda-validate/koda_validate/dataclasses.py:146:37 - error: Operator "in" not supported for types "str" and "Dict[str, Validator[Any]] | None"
+     Operator "in" not supported for types "str" and "None" (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/koda-validate/koda_validate/dataclasses.py:146:17 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   /tmp/mypy_primer/projects/koda-validate/koda_validate/generic.py:195:16 - error: Expression of type "AlwaysValid[Any] | None" cannot be assigned to return type "AlwaysValid[A@AlwaysValid]"
+     Type "AlwaysValid[Any] | None" cannot be assigned to type "AlwaysValid[A@AlwaysValid]"
+       Type "None" cannot be assigned to type "AlwaysValid[A@AlwaysValid]" (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/koda-validate/koda_validate/generic.py:320:16 - error: Expression of type "NotBlank[Any] | None" cannot be assigned to return type "NotBlank[StrOrBytes@NotBlank]"
+     Type "NotBlank[Any] | None" cannot be assigned to type "NotBlank[StrOrBytes@NotBlank]"
+       Type "None" cannot be assigned to type "NotBlank[StrOrBytes@NotBlank]" (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/koda-validate/koda_validate/namedtuple.py:139:37 - error: Operator "in" not supported for types "str" and "Dict[str, Validator[Any]] | None"
+     Operator "in" not supported for types "str" and "None" (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/koda-validate/koda_validate/namedtuple.py:139:17 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+ /tmp/mypy_primer/projects/koda-validate/koda_validate/typeddict.py
+   /tmp/mypy_primer/projects/koda-validate/koda_validate/typeddict.py:143:37 - error: Operator "in" not supported for types "str" and "Dict[str, Validator[Any]] | None"
+     Operator "in" not supported for types "str" and "None" (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/koda-validate/koda_validate/typeddict.py:143:17 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
- 172 errors, 5 warnings, 0 informations 
+ 180 errors, 5 warnings, 0 informations 

pydantic (https://github.com/samuelcolvin/pydantic)
+   /tmp/mypy_primer/projects/pydantic/pydantic/json_schema.py:480:62 - error: Argument of type "JsonSchemaValue | None" cannot be assigned to parameter "json_schema" of type "JsonSchemaValue" in function "populate_defs"
+     Type "JsonSchemaValue | None" cannot be assigned to type "JsonSchemaValue"
+       Type "None" cannot be assigned to type "JsonSchemaValue" (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/pydantic/pydantic/json_schema.py:481:49 - error: Argument of type "JsonSchemaValue | None" cannot be assigned to parameter "json_schema" of type "JsonSchemaValue" in function "convert_to_all_of"
+     Type "JsonSchemaValue | None" cannot be assigned to type "JsonSchemaValue"
+       Type "None" cannot be assigned to type "JsonSchemaValue" (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/pydantic/pydantic/json_schema.py:482:20 - error: Expression of type "JsonSchemaValue | None" cannot be assigned to return type "JsonSchemaValue"
+     Type "JsonSchemaValue | None" cannot be assigned to type "JsonSchemaValue"
+       Type "None" cannot be assigned to type "JsonSchemaValue" (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/pydantic/pydantic/main.py:216:17 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   /tmp/mypy_primer/projects/pydantic/pydantic/main.py:253:25 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   /tmp/mypy_primer/projects/pydantic/pydantic/main.py:1109:27 - error: "pop" is not a known member of "None" (reportOptionalMemberAccess)
+   /tmp/mypy_primer/projects/pydantic/pydantic/main.py:1112:21 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   /tmp/mypy_primer/projects/pydantic/pydantic/_internal/_generate_schema.py:1314:86 - error: Argument of type "Iterable[Any]" cannot be assigned to parameter "annotations" of type "tuple[Any, ...]" in function "_get_prepare_pydantic_annotations_for_known_type"
+     "Iterable[Any]" is incompatible with "tuple[Any, ...]" (reportGeneralTypeIssues)
- 66 errors, 0 warnings, 0 informations 
+ 74 errors, 0 warnings, 0 informations 

Tanjun (https://github.com/FasterSpeeding/Tanjun)
+   /tmp/mypy_primer/projects/Tanjun/tanjun/annotations.py:454:33 - error: Argument of type "_ConverterSig[Any] | Sequence[_ConverterSig[Any]]" cannot be assigned to parameter "_str_converters" of type "Sequence[_ConverterSig[Any]]" in function "__init__"
+     Type "_ConverterSig[Any] | Sequence[_ConverterSig[Any]]" cannot be assigned to type "Sequence[_ConverterSig[Any]]"
+       "function" is incompatible with "Sequence[_ConverterSig[Any]]" (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/Tanjun/tanjun/annotations.py:1551:80 - error: "_ConverterSig[_T@__getitem__]" is not iterable (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/Tanjun/tanjun/annotations.py:1551:80 - warning: Argument type is unknown
+     Argument corresponds to parameter "converter" in function "__init__" (reportUnknownArgumentType)
+   /tmp/mypy_primer/projects/Tanjun/tanjun/annotations.py:1551:80 - warning: Argument type is unknown
+     Argument corresponds to parameter "other_converters" in function "__init__" (reportUnknownArgumentType)
+   /tmp/mypy_primer/projects/Tanjun/tanjun/_internal/__init__.py:571:32 - error: Argument of type "str" cannot be assigned to parameter "__s" of type "slice" in function "__getitem__"
+     "str" is incompatible with "slice" (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/Tanjun/tanjun/_internal/__init__.py:575:25 - error: Argument of type "str" cannot be assigned to parameter "__key" of type "slice" in function "__setitem__"
+     "str" is incompatible with "slice" (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/Tanjun/tanjun/_internal/__init__.py:575:25 - error: Argument of type "_TreeT" cannot be assigned to parameter "__value" of type "Iterable[tuple[list[str], MessageCommand[Any]]]" in function "__setitem__"
+     "_TreeT" is incompatible with "Iterable[tuple[list[str], MessageCommand[Any]]]"
+       TypeVar "_T_co@Iterable" is covariant
+         Type "str | _IndexKeys" cannot be assigned to type "tuple[list[str], MessageCommand[Any]]"
+           "_IndexKeys" is incompatible with "tuple[list[str], MessageCommand[Any]]" (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/Tanjun/tanjun/_internal/__init__.py:584:32 - error: Argument of type "Literal[_IndexKeys.COMMANDS]" cannot be assigned to parameter "__s" of type "slice" in function "__getitem__"
+     "Literal[_IndexKeys.COMMANDS]" is incompatible with "slice" (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/Tanjun/tanjun/_internal/__init__.py:584:21 - warning: Type of "commands" is partially unknown
+     Type of "commands" is "dict[str | _IndexKeys, _TreeT | list[tuple[list[str], MessageCommand[Any]]]] | list[tuple[list[str], MessageCommand[Any]]] | Unknown" (reportUnknownVariableType)
+   /tmp/mypy_primer/projects/Tanjun/tanjun/_internal/__init__.py:588:21 - error: Argument of type "Literal[_IndexKeys.COMMANDS]" cannot be assigned to parameter "__key" of type "slice" in function "__setitem__"
+     "Literal[_IndexKeys.COMMANDS]" is incompatible with "slice" (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/Tanjun/tanjun/_internal/__init__.py:652:24 - error: Argument of type "str" cannot be assigned to parameter "__s" of type "slice" in function "__getitem__"
+     "str" is incompatible with "slice" (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/Tanjun/tanjun/_internal/__init__.py:715:27 - error: Argument of type "Literal[_IndexKeys.COMMANDS]" cannot be assigned to parameter "__s" of type "slice" in function "__getitem__"
+     "Literal[_IndexKeys.COMMANDS]" is incompatible with "slice" (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/Tanjun/tanjun/_internal/__init__.py:702:28 - error: Argument of type "str" cannot be assigned to parameter "__s" of type "slice" in function "__getitem__"
+     "str" is incompatible with "slice" (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/Tanjun/tanjun/_internal/__init__.py:715:17 - warning: Type of "entries" is partially unknown
+     Type of "entries" is "dict[str | _IndexKeys, _TreeT | list[tuple[list[str], MessageCommand[Any]]]] | list[tuple[list[str], MessageCommand[Any]]] | Unknown" (reportUnknownVariableType)
+   /tmp/mypy_primer/projects/Tanjun/tanjun/_internal/__init__.py:718:24 - error: Argument of type "Literal[_IndexKeys.COMMANDS]" cannot be assigned to parameter "__s" of type "slice" in function "__getitem__"
+     "Literal[_IndexKeys.COMMANDS]" is incompatible with "slice" (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/Tanjun/tanjun/_internal/__init__.py:719:25 - error: Argument of type "Literal[_IndexKeys.COMMANDS]" cannot be assigned to parameter "__key" of type "SupportsIndex | slice" in function "__delitem__"
+     Type "Literal[_IndexKeys.COMMANDS]" cannot be assigned to type "SupportsIndex | slice"
+       "Literal[_IndexKeys.COMMANDS]" is incompatible with protocol "SupportsIndex"
+         "__index__" is not present
+       "Literal[_IndexKeys.COMMANDS]" is incompatible with "slice" (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/Tanjun/tanjun/_internal/__init__.py:727:35 - error: Cannot access member "get" for type "list[tuple[list[str], MessageCommand[Any]]]"
+     Member "get" is unknown (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/Tanjun/tanjun/_internal/__init__.py:727:30 - warning: Type of "get" is unknown (reportUnknownMemberType)
+   /tmp/mypy_primer/projects/Tanjun/tanjun/_internal/__init__.py:727:30 - warning: Type of "get" is partially unknown
+     Type of "get" is "Overload[(__key: str | _IndexKeys, /) -> (dict[str | _IndexKeys, _TreeT | list[tuple[list[str], MessageCommand[Any]]]] | list[tuple[list[str], MessageCommand[Any]]] | None), (__key: str | _IndexKeys, __default: dict[str | _IndexKeys, _TreeT | list[tuple[list[str], MessageCommand[Any]]]] | list[tuple[list[str], MessageCommand[Any]]] | _T@get, /) -> (dict[str | _IndexKeys, _TreeT | list[tuple[list[str], MessageCommand[Any]]]] | list[tuple[list[str], MessageCommand[Any]]] | _T@get)] | Unknown" (reportUnknownMemberType)
+   /tmp/mypy_primer/projects/Tanjun/tanjun/_internal/__init__.py:727:21 - warning: Type of "parent" is partially unknown
+     Type of "parent" is "dict[str | _IndexKeys, _TreeT | list[tuple[list[str], MessageCommand[Any]]]] | list[tuple[list[str], MessageCommand[Any]]] | Unknown | None" (reportUnknownVariableType)
+   /tmp/mypy_primer/projects/Tanjun/tanjun/commands/slash.py:1736:30 - error: "ConverterSig[float]" is not iterable (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/Tanjun/tanjun/commands/slash.py:1736:30 - error: "ConverterSig[int]" is not iterable (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/Tanjun/tanjun/commands/slash.py:1736:30 - error: "ConverterSig[str]" is not iterable (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/Tanjun/tanjun/commands/slash.py:1736:17 - warning: Type of "converter" is unknown (reportUnknownVariableType)
+   /tmp/mypy_primer/projects/Tanjun/tanjun/commands/slash.py:1793:28 - error: Argument of type "_AnyConverterSig | Sequence[_AnyConverterSig]" cannot be assigned to parameter "converters" of type "list[_AnyConverterSig] | None" in function "__init__"
+     Type "_AnyConverterSig | Sequence[_AnyConverterSig]" cannot be assigned to type "list[_AnyConverterSig] | None"
+       Type "Sequence[_AnyConverterSig]" cannot be assigned to type "list[_AnyConverterSig] | None"
+         "Sequence[_AnyConverterSig]" is incompatible with "list[_AnyConverterSig]"
+         Type cannot be assigned to type "None" (reportGeneralTypeIssues)
-   /tmp/mypy_primer/projects/Tanjun/tests/test_annotations.py:194:5 - warning: Type of "command" is partially unknown
-     Type of "command" is "Unknown | MessageCommand[Any]" (reportUnknownVariableType)
-   /tmp/mypy_primer/projects/Tanjun/tests/test_annotations.py:198:37 - warning: Argument type is partially unknown
-     Argument corresponds to parameter "command" in function "with_annotated_args"
-     Argument type is "Unknown | MessageCommand[Any]" (reportUnknownArgumentType)
-   /tmp/mypy_primer/projects/Tanjun/tests/test_annotations.py:200:12 - warning: Type of "parser" is unknown (reportUnknownMemberType)
-   /tmp/mypy_primer/projects/Tanjun/tests/test_annotations.py:200:12 - warning: Type of "parser" is partially unknown
-     Type of "parser" is "Unknown | MessageParser | None" (reportUnknownMemberType)
-   /tmp/mypy_primer/projects/Tanjun/tests/test_annotations.py:201:23 - warning: Type of "wrapped_command" is unknown (reportUnknownMemberType)
-   /tmp/mypy_primer/projects/Tanjun/tests/test_annotations.py:201:23 - warning: Type of "wrapped_command" is partially unknown
-     Type of "wrapped_command" is "Unknown | ExecutableCommand[Any] | None" (reportUnknownMemberType)
-   /tmp/mypy_primer/projects/Tanjun/tests/test_annotations.py:202:12 - warning: Type of "wrapped_command" is unknown (reportUnknownMemberType)
-   /tmp/mypy_primer/projects/Tanjun/tests/test_annotations.py:202:12 - warning: Type of "wrapped_command" is partially unknown
-     Type of "wrapped_command" is "Unknown | ExecutableCommand[Any] | None" (reportUnknownMemberType)
-   /tmp/mypy_primer/projects/Tanjun/tests/test_annotations.py:203:12 - warning: Type of "wrapped_command" is unknown (reportUnknownMemberType)
-   /tmp/mypy_primer/projects/Tanjun/tests/test_annotations.py:203:12 - warning: Type of "wrapped_command" is partially unknown
-     Type of "wrapped_command" is "Unknown | ExecutableCommand[Any] | None" (reportUnknownMemberType)
-   /tmp/mypy_primer/projects/Tanjun/tests/test_annotations.py:210:5 - warning: Type of "command" is partially unknown
-     Type of "command" is "Unknown | MessageCommand[Any]" (reportUnknownVariableType)
-   /tmp/mypy_primer/projects/Tanjun/tests/test_annotations.py:214:37 - warning: Argument type is partially unknown
-     Argument corresponds to parameter "command" in function "with_annotated_args"

... (truncated 61 lines) ...

freqtrade (https://github.com/freqtrade/freqtrade)
+ /tmp/mypy_primer/projects/freqtrade/freqtrade/configuration/configuration.py
+   /tmp/mypy_primer/projects/freqtrade/freqtrade/configuration/configuration.py:44:16 - error: Expression of type "Config | None" cannot be assigned to return type "Config"
+     Type "Config | None" cannot be assigned to type "Config"
+       Type "None" cannot be assigned to type "Config" (reportGeneralTypeIssues)
+ /tmp/mypy_primer/projects/freqtrade/freqtrade/resolvers/strategy_resolver.py
+   /tmp/mypy_primer/projects/freqtrade/freqtrade/resolvers/strategy_resolver.py:43:23 - error: "get" is not a known member of "None" (reportOptionalMemberAccess)
+   /tmp/mypy_primer/projects/freqtrade/freqtrade/resolvers/strategy_resolver.py:47:25 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   /tmp/mypy_primer/projects/freqtrade/freqtrade/resolvers/strategy_resolver.py:49:35 - error: Argument of type "Config | None" cannot be assigned to parameter "config" of type "Config" in function "_load_strategy"
+     Type "Config | None" cannot be assigned to type "Config"
+       Type "None" cannot be assigned to type "Config" (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/freqtrade/freqtrade/resolvers/strategy_resolver.py:50:30 - error: "get" is not a known member of "None" (reportOptionalMemberAccess)
+   /tmp/mypy_primer/projects/freqtrade/freqtrade/resolvers/strategy_resolver.py:82:67 - error: Argument of type "Config | None" cannot be assigned to parameter "config" of type "Config" in function "_override_attribute_helper"
+     Type "Config | None" cannot be assigned to type "Config"
+       Type "None" cannot be assigned to type "Config" (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/freqtrade/freqtrade/resolvers/strategy_resolver.py:88:65 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
- 759 errors, 54 warnings, 0 informations 
+ 766 errors, 54 warnings, 0 informations 

operator (https://github.com/canonical/operator)
+ /tmp/mypy_primer/projects/operator/ops/charm.py
+   /tmp/mypy_primer/projects/operator/ops/charm.py:1295:26 - error: "get" is not a known member of "None" (reportOptionalMemberAccess)
+   /tmp/mypy_primer/projects/operator/ops/charm.py:1296:32 - error: "get" is not a known member of "None" (reportOptionalMemberAccess)
+   /tmp/mypy_primer/projects/operator/ops/charm.py:1297:31 - error: "get" is not a known member of "None" (reportOptionalMemberAccess)
+   /tmp/mypy_primer/projects/operator/ops/charm.py:1298:29 - error: "get" is not a known member of "None" (reportOptionalMemberAccess)
+   /tmp/mypy_primer/projects/operator/ops/pebble.py:1568:81 - error: Argument of type "Dict[str, Any] | None" cannot be assigned to parameter "headers" of type "MutableMapping[str, str]" in function "__init__"
+     Type "Dict[str, Any] | None" cannot be assigned to type "MutableMapping[str, str]"
+       Type "None" cannot be assigned to type "MutableMapping[str, str]" (reportGeneralTypeIssues)
+ /tmp/mypy_primer/projects/operator/ops/testing.py
+   /tmp/mypy_primer/projects/operator/ops/testing.py:1685:53 - error: "name" is not a known member of "None" (reportOptionalMemberAccess)
- 3 errors, 0 warnings, 0 informations 
+ 9 errors, 0 warnings, 0 informations 

antidote (https://github.com/Finistere/antidote)
-   /tmp/mypy_primer/projects/antidote/src/antidote/core/_injection.py:78:31 - error: Type of "extra" is partially unknown
-     Type of "extra" is "Any | Unknown" (reportUnknownVariableType)
-   /tmp/mypy_primer/projects/antidote/src/antidote/core/_injection.py:78:69 - error: Argument type is partially unknown
-     Argument corresponds to parameter "x" in function "_is_dependency"
-     Argument type is "Any | Unknown" (reportUnknownArgumentType)
-     Type of "methods" is "dict[str, ((...) -> Any) | staticmethod[Any, Unknown] | classmethod[Any, (...), Unknown]]" (reportUnknownVariableType)
+     Type of "methods" is "Dict[str, ((...) -> Any) | staticmethod[Any, Unknown] | classmethod[Any, (...), Unknown]]" (reportUnknownVariableType)
-     Type of "methods" is "dict[str, ((...) -> Any) | staticmethod[Any, Unknown] | classmethod[Any, (...), Unknown]]" (reportUnknownVariableType)
+     Type of "methods" is "Dict[str, ((...) -> Any) | staticmethod[Any, Unknown] | classmethod[Any, (...), Unknown]]" (reportUnknownVariableType)
- 4272 errors, 76 warnings, 0 informations 
+ 4270 errors, 76 warnings, 0 informations 

pandera (https://github.com/pandera-dev/pandera)
+   /tmp/mypy_primer/projects/pandera/pandera/api/pandas/container.py:127:27 - error: Argument of type "Dict[Any, Unknown] | None" cannot be assigned to parameter "column_dict" of type "dict[Any, Unknown]" in function "_validate_columns"
+     Type "Dict[Any, Unknown] | None" cannot be assigned to type "dict[Any, Unknown]"
+       Type "None" cannot be assigned to type "dict[Any, Unknown]" (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/pandera/pandera/api/pandas/container.py:128:36 - error: Argument of type "Dict[Any, Unknown] | None" cannot be assigned to parameter "columns" of type "dict[Any, Unknown]" in function "_columns_renamed"
+     Type "Dict[Any, Unknown] | None" cannot be assigned to type "dict[Any, Unknown]"
+       Type "None" cannot be assigned to type "dict[Any, Unknown]" (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/pandera/pandera/api/pandas/model_components.py:268:12 - error: Expression of type "tuple[AnyCallable | classmethod[Unknown, (...), Unknown], classmethod[Unknown, (...), Unknown] | classmethod[Any, (), Any]]" cannot be assigned to return type "Tuple[AnyCallable, classmethod[Unknown, (...), Unknown]]"
+     Type "AnyCallable | classmethod[Unknown, (...), Unknown]" cannot be assigned to type "AnyCallable"
+       Type "classmethod[Unknown, (...), Unknown]" cannot be assigned to type "AnyCallable" (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/pandera/pandera/api/pyspark/container.py:116:27 - error: Argument of type "Dict[Any, Unknown] | None" cannot be assigned to parameter "column_dict" of type "dict[Any, Unknown]" in function "_validate_columns"
+     Type "Dict[Any, Unknown] | None" cannot be assigned to type "dict[Any, Unknown]"
+       Type "None" cannot be assigned to type "dict[Any, Unknown]" (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/pandera/pandera/api/pyspark/container.py:117:36 - error: Argument of type "Dict[Any, Unknown] | None" cannot be assigned to parameter "columns" of type "dict[Any, Unknown]" in function "_columns_renamed"
+     Type "Dict[Any, Unknown] | None" cannot be assigned to type "dict[Any, Unknown]"
+       Type "None" cannot be assigned to type "dict[Any, Unknown]" (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/pandera/pandera/api/pyspark/model_components.py:244:12 - error: Expression of type "tuple[AnyCallable | classmethod[Unknown, (...), Unknown], classmethod[Unknown, (...), Unknown] | classmethod[Any, (), Any]]" cannot be assigned to return type "Tuple[AnyCallable, classmethod[Unknown, (...), Unknown]]"
+     Type "AnyCallable | classmethod[Unknown, (...), Unknown]" cannot be assigned to type "AnyCallable"
+       Type "classmethod[Unknown, (...), Unknown]" cannot be assigned to type "AnyCallable" (reportGeneralTypeIssues)
- 1041 errors, 10 warnings, 0 informations 
+ 1047 errors, 10 warnings, 0 informations 

hydra-zen (https://github.com/mit-ll-responsible-ai/hydra-zen)
+   /tmp/mypy_primer/projects/hydra-zen/src/hydra_zen/structured_configs/_implementations.py:1615:24 - error: Object of type "None" cannot be used as iterable value (reportOptionalIterable)
+   /tmp/mypy_primer/projects/hydra-zen/src/hydra_zen/structured_configs/_implementations.py:1615:24 - error: "Builds[((...) -> Any) -> ((...) -> Any)]" is not iterable
+     "__iter__" method not defined (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/hydra-zen/src/hydra_zen/structured_configs/_implementations.py:1615:24 - error: "ZenPartialBuilds[((...) -> Any) -> ((...) -> Any)]" is not iterable
+     "__iter__" method not defined (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/hydra-zen/src/hydra_zen/structured_configs/_implementations.py:1615:24 - error: "HydraPartialBuilds[((...) -> Any) -> ((...) -> Any)]" is not iterable
+     "__iter__" method not defined (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/hydra-zen/src/hydra_zen/structured_configs/_implementations.py:1615:24 - error: "Just[((...) -> Any) -> ((...) -> Any)]" is not iterable
+     "__iter__" method not defined (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/hydra-zen/src/hydra_zen/structured_configs/_implementations.py:1615:24 - error: "type[Builds[((...) -> Any) -> ((...) -> Any)]]" is not iterable
+     "__iter__" method not defined (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/hydra-zen/src/hydra_zen/structured_configs/_implementations.py:1615:24 - error: "type[ZenPartialBuilds[((...) -> Any) -> ((...) -> Any)]]" is not iterable
+     "__iter__" method not defined (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/hydra-zen/src/hydra_zen/structured_configs/_implementations.py:1615:24 - error: "type[HydraPartialBuilds[((...) -> Any) -> ((...) -> Any)]]" is not iterable
+     "__iter__" method not defined (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/hydra-zen/src/hydra_zen/structured_configs/_implementations.py:1615:24 - error: "type[Just[((...) -> Any) -> ((...) -> Any)]]" is not iterable
+     "__iter__" method not defined (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/hydra-zen/src/hydra_zen/structured_configs/_implementations.py:1615:24 - error: "((...) -> Any) -> ((...) -> Any)" is not iterable (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/hydra-zen/src/hydra_zen/structured_configs/_implementations.py:1631:40 - error: Cannot access member "append" for type "Sequence[str | Builds[Any]]"
+     Member "append" is unknown (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/hydra-zen/src/hydra_zen/structured_configs/_implementations.py:1639:40 - error: Cannot access member "append" for type "Sequence[str | Builds[Any]]"
+     Member "append" is unknown (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/hydra-zen/src/hydra_zen/structured_configs/_implementations.py:1642:36 - error: Cannot access member "append" for type "Sequence[str | Builds[Any]]"
+     Member "append" is unknown (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/hydra-zen/src/hydra_zen/structured_configs/_implementations.py:1649:36 - error: Cannot access member "append" for type "Sequence[str | Builds[Any]]"
+     Member "append" is unknown (reportGeneralTypeIssues)
- 182 errors, 0 warnings, 0 informations 
+ 196 errors, 0 warnings, 0 informations 

discord.py (https://github.com/Rapptz/discord.py)
+ /tmp/mypy_primer/projects/discord.py/discord/file.py
+   /tmp/mypy_primer/projects/discord.py/discord/file.py:114:59 - error: Argument of type "str | None" cannot be assigned to parameter "filename" of type "str" in function "_strip_spoiler"
+     Type "str | None" cannot be assigned to type "str"
+       Type "None" cannot be assigned to type "str" (reportGeneralTypeIssues)
+   /tmp/mypy_primer/projects/discord.py/discord/http.py:715:46 - error: "get" is not a known member of "None" (reportOptionalMemberAccess)
+   /tmp/mypy_primer/projects/discord.py/discord/http.py:695:50 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   /tmp/mypy_primer/projects/discord.py/discord/utils.py:1175:62 - error: Argument of type "Dict[str, Any] | None" cannot be assigned to parameter "cache" of type "Dict[str, Any]" in function "evaluate_annotation"
+     Type "Dict[str, Any] | None" cannot be assigned to type "Dict[str, Any]"
+       Type "None" cannot be assigned to type "Dict[str, Any]" (reportGeneralTypeIssues)
+ /tmp/mypy_primer/projects/discord.py/discord/ext/commands/core.py
+   /tmp/mypy_primer/projects/discord.py/discord/ext/commands/core.py:464:106 - warning: Unnecessary "# type: ignore" comment
+ /tmp/mypy_primer/projects/discord.py/discord/ext/commands/hybrid.py
+   /tmp/mypy_primer/projects/discord.py/discord/ext/commands/hybrid.py:541:30 - error: "wrapped" is not a known member of "None" (reportOptionalMemberAccess)
+   /tmp/mypy_primer/projects/discord.py/discord/webhook/async_.py:562:9 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   /tmp/mypy_primer/projects/discord.py/discord/webhook/async_.py:566:13 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   /tmp/mypy_primer/projects/discord.py/discord/webhook/async_.py:568:13 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   /tmp/mypy_primer/projects/discord.py/discord/webhook/async_.py:572:13 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   /tmp/mypy_primer/projects/discord.py/discord/webhook/async_.py:574:13 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   /tmp/mypy_primer/projects/discord.py/discord/webhook/async_.py:578:13 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   /tmp/mypy_primer/projects/discord.py/discord/webhook/async_.py:580:13 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   /tmp/mypy_primer/projects/discord.py/discord/webhook/async_.py:583:9 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   /tmp/mypy_primer/projects/discord.py/discord/webhook/async_.py:587:13 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   /tmp/mypy_primer/projects/discord.py/discord/webhook/async_.py:589:13 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)

... (truncated 41 lines) ...```