Add function signature hooks for dataclasses functions: replace, asdict, astuple

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python
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devtools

调研方向

Start by locating the existing dataclass creation support and the typeshed definitions for replace, asdict, and astuple. Determine how the plugin can provide more precise signatures, including a possible TypedDict return for asdict. Done means these functions no longer rely on the broad signatures described in the issue and their inferred types are covered by tests.

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描述

feature priority-1-normal topic-dataclasses

Currently, the plugin only supports dataclass creation (i.e. generation of dunder methods with correct types, including __init__). However, some functions in the dataclass modules have quite broad types in typeshed, for example:

def replace(obj: _T, **changes: Any) -> _T: ...

so that arbitrary arguments can be give for changes, etc. The plugin should be able to give more precise type for these functions. In particular, asdict could return a TypedDict.

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