[Dy2St] Accept dataclass as input argument

[SigureMo]

PR Category

Execute Infrastructure

PR Types

Bug fixes

Description

在此之前，AST 动转静在根据输入计算 hash 时会依次对输入进行 hash，而 dataclass 本身是 unhashable 的，因此需要单独写一下 hash 的方式

当然，SOT 是没有这个问题的，但 SOT 有其他的问题（无法识别内部数据，会 hold 内部的 Tensor，有 OOM 的隐患）

[paddle-bot]

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[Copilot]

Pull Request Overview

Adds support for using Python dataclass instances as inputs to Paddle’s dynamic-to-static (dy2static) API by implementing custom hashing logic and verifying it with a new unit test.

• Introduce _is_dataclass_instance and extend make_hashable to handle dataclass objects.
• Add import of is_dataclass from the standard library.
• Add a new test to verify that a dataclass wrapping a Tensor can be passed through paddle.jit.to_static.

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
test/dygraph_to_static/test_dataclass_as_input.py	New unit test to ensure dataclass input is accepted and matches output
python/paddle/jit/dy2static/utils.py	Import is_dataclass; add detection and hashing logic for dataclass

[Copilot]

Two different dataclass types with identical field values will produce the same hash, which may cause unintended cache collisions. Consider including the dataclass’s type (e.g. type(x) or its qualified name) as part of the returned tuple to distinguish between types.

Suggested change

	return tuple(
	map(
	make_hashable,
	[
	getattr(x, field_name)
	for field_name in x.__dataclass_fields__
	],
	)
	return (
	type(x).__name__,
	tuple(
	map(
	make_hashable,
	[
	getattr(x, field_name)
	for field_name in x.__dataclass_fields__
	],
	)
	),

[Copilot]

Relying on the internal __dataclass_fields__ dict risks future incompatibilities and implicitly depends on dict ordering. Use dataclasses.fields(x) to get a stable, documented list of fields in definition order.

[codecov-commenter]

Codecov Report

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Additional details and impacted files

@@ Coverage Diff @@ ## develop #73205 +/- ## =========================================== Coverage ? 100.00% =========================================== Files ? 1 Lines ? 5 Branches ? 0 =========================================== Hits ? 5 Misses ? 0 Partials ? 0 

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