Fix TypeError: unhashable type: 'dict' in Asset.__hash__()

[ebongzzang]

What change does this PR introduce?

• Fixes the method airflow.sdk.definitions.asset.Asset.__hash__() in task-sdk which was attempting to hash a dictionary directly, causing a TypeError.
• The current implementation attempts to hash a dictionary directly, which is not allowed in Python since dictionaries are mutable and unhashable. This prevents Asset objects from being used in sets or as dictionary keys, which is inconsistent with the __eq__ implementation.

Changes

• Modified __hash__ to serialize the attrs dictionary to JSON string using json.dumps(sort_keys=True) before hashing.
  • Applied the same pattern used in the codebase for hashing dictionaries:
    • Similar to airflow/triggers/base.py:147 which uses json.dumps() to serialize kwargs before hashing.
    • Similar to airflow/providers/standard/operators/python.py:834-836 which uses json.dumps(hash_dict, sort_keys=True) to create a hashable string.

Was generative AI tooling used to co-author this PR?

• Yes (please specify the tool below)

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[boring-cyborg]

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[Copilot]

Pull request overview

This PR fixes a TypeError in Asset.__hash__() that was attempting to hash a dictionary directly. The fix serializes the attrs dictionary to a JSON string using json.dumps(sort_keys=True) before hashing, following the pattern used elsewhere in the codebase.

Changes:

• Modified Asset.__hash__() to use json.dumps() for serializing the dictionary before hashing
• Added tests for hash equality with same and different URIs

Reviewed changes

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

File	Description
task-sdk/src/airflow/sdk/definitions/asset/init.py	Added json import and modified __hash__ to serialize dictionary using json.dumps(sort_keys=True)
task-sdk/tests/task_sdk/definitions/test_asset.py	Added two test cases to verify hash behavior for same and different URIs

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[ebongzzang]

Apologies - the Copilot review comment was automatically generated by my GitHub account settings when I created this PR. This was unintentional.

If this is an issue for the project, I can disable Copilot and resubmit the PR. Please let me know if you'd like me to take any action.