Give arguments a more reasonable location #14562
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Modifies arguments parsed from the AST to use the AST's row and column information. Modifies function definitions to not overwrite their arguments' locations. Modifies incorrect override messages to use the locations of arguments instead of the method itself. Modifies tests to expect the new locations.
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- Only fetch python AST's end column and line when available - Move type-ignore to the line with an argument - Update python-slow test case to use location of argument
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This might have to include some flag to use the old behavior, or to try to detect type: ignore at the old location, since it'll break existing users otherwise. |
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I like the idea of detecting a type: ignore at the old location, if it's not hard to implement. Otherwise we'll need two feature releases before we can enable this by default (as it breaks backward compatibility), and it will cause some friction for users. |
Add another context to this message reporting. This means that we'll now check both contexts when looking at what errors to ignore.
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Diff from mypy_primer, showing the effect of this PR on open source code: pip (https://github.com/pypa/pip)
- src/pip/_internal/network/xmlrpc.py:32: error: Argument 3 of "request" is incompatible with supertype "Transport"; supertype defines the argument type as "Union[bytes, Union[bytearray, memoryview, array[Any], mmap, _CData, PickleBuffer]]" [override]
+ src/pip/_internal/network/xmlrpc.py:36: error: Argument 3 of "request" is incompatible with supertype "Transport"; supertype defines the argument type as "Union[bytes, Union[bytearray, memoryview, array[Any], mmap, _CData, PickleBuffer]]" [override]
- src/pip/_internal/network/xmlrpc.py:32: note: This violates the Liskov substitution principle
+ src/pip/_internal/network/xmlrpc.py:36: note: This violates the Liskov substitution principle
- src/pip/_internal/network/xmlrpc.py:32: note: See https://mypy.readthedocs.io/en/stable/common_issues.html#incompatible-overrides
+ src/pip/_internal/network/xmlrpc.py:36: note: See https://mypy.readthedocs.io/en/stable/common_issues.html#incompatible-overrides
operator (https://github.com/canonical/operator)
- ops/framework.py:688: error: Name "kind" already defined on line 679 [no-redef]
+ ops/framework.py:688: error: Name "kind" already defined on line 680 [no-redef]
- ops/charm.py:1086: error: Name "raw" already defined on line 1082 [no-redef]
+ ops/charm.py:1086: error: Name "raw" already defined on line 1083 [no-redef]
- ops/charm.py:1087: error: Name "actions_raw" already defined on line 1082 [no-redef]
+ ops/charm.py:1087: error: Name "actions_raw" already defined on line 1084 [no-redef]
SinbadCogs (https://github.com/mikeshardmind/SinbadCogs)
- rolemanagement/utils.py:57: error: Argument 2 of "update_roles_atomically" is incompatible with supertype "MixinMeta"; supertype defines the argument type as "Optional[List[Any]]" [override]
+ rolemanagement/utils.py:61: error: Argument 2 of "update_roles_atomically" is incompatible with supertype "MixinMeta"; supertype defines the argument type as "Optional[List[Any]]" [override]
- rolemanagement/utils.py:57: note: This violates the Liskov substitution principle
+ rolemanagement/utils.py:61: note: This violates the Liskov substitution principle
- rolemanagement/utils.py:57: note: See https://mypy.readthedocs.io/en/stable/common_issues.html#incompatible-overrides
+ rolemanagement/utils.py:61: note: See https://mypy.readthedocs.io/en/stable/common_issues.html#incompatible-overrides
- rolemanagement/utils.py:57: error: Argument 3 of "update_roles_atomically" is incompatible with supertype "MixinMeta"; supertype defines the argument type as "Optional[List[Any]]" [override]
+ rolemanagement/utils.py:62: error: Argument 3 of "update_roles_atomically" is incompatible with supertype "MixinMeta"; supertype defines the argument type as "Optional[List[Any]]" [override]
+ rolemanagement/utils.py:62: note: This violates the Liskov substitution principle
+ rolemanagement/utils.py:62: note: See https://mypy.readthedocs.io/en/stable/common_issues.html#incompatible-overrides
ibis (https://github.com/ibis-project/ibis)
- ibis/backends/duckdb/__init__.py:276: error: Argument 1 of "read_csv" is incompatible with supertype "_FileIOHandler"; supertype defines the argument type as "Union[str, Path]" [override]
+ ibis/backends/duckdb/__init__.py:278: error: Argument 1 of "read_csv" is incompatible with supertype "_FileIOHandler"; supertype defines the argument type as "Union[str, Path]" [override]
- ibis/backends/duckdb/__init__.py:276: note: This violates the Liskov substitution principle
+ ibis/backends/duckdb/__init__.py:278: note: This violates the Liskov substitution principle
- ibis/backends/duckdb/__init__.py:276: note: See https://mypy.readthedocs.io/en/stable/common_issues.html#incompatible-overrides
+ ibis/backends/duckdb/__init__.py:278: note: See https://mypy.readthedocs.io/en/stable/common_issues.html#incompatible-overrides
- ibis/backends/duckdb/__init__.py:320: error: Argument 1 of "read_parquet" is incompatible with supertype "_FileIOHandler"; supertype defines the argument type as "Union[str, Path]" [override]
+ ibis/backends/duckdb/__init__.py:322: error: Argument 1 of "read_parquet" is incompatible with supertype "_FileIOHandler"; supertype defines the argument type as "Union[str, Path]" [override]
- ibis/backends/duckdb/__init__.py:320: note: This violates the Liskov substitution principle
+ ibis/backends/duckdb/__init__.py:322: note: This violates the Liskov substitution principle
- ibis/backends/duckdb/__init__.py:320: note: See https://mypy.readthedocs.io/en/stable/common_issues.html#incompatible-overrides
+ ibis/backends/duckdb/__init__.py:322: note: See https://mypy.readthedocs.io/en/stable/common_issues.html#incompatible-overrides
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Looks like the primer is only detecting changed line numbers now, which is desirable. |
JukkaL
approved these changes
Feb 16, 2023
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Modifies arguments parsed from the AST to use the AST's row and column information. Modifies function definitions to not overwrite their arguments' locations. Modifies incorrect override messages to use the locations of arguments instead of the method itself. Modifies tests to expect the new locations.
I'm not sure whether this handles bound arguments correctly; it passes tests but I don't know whether there's some edge case I'm missing.
Fixes #8298.