Python version not added to the Agent Engine update query mask

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Assessment

Difficulty
2/5
Estimated time
1-3 hours
Newbie friendliness
72/100
Issue type
Bug
Clarity
Clearly specified
Activity status
Stale
Tech stack
python

Research direction

Start in vertexai/_genai/agent_engines.py around lines 1092-1101 and compare how python_version is placed in the query payload with the update mask. Reproduce the Agent Engine update using the issue's vertexai.Client example; done means the requested Python version is included in the update mask and the Agent Engine version changes.

Written by the indexing model from the issue text.

Description

api: vertex-ai
Environment details
  • OS type and version: Mac OS 26.1
  • Python version: 3.12
  • pip version: 25.2
  • google-cloud-aiplatform version: 1.129.0
Steps to reproduce
  1. Use vertexai.Client(project=..., location=...).agent_engine.update(agent=..., config={'python-version': ...}).
  2. The python version is not added to the update mask for the update query to aiplatform.
  3. The python version used by the agent engine is not updated.

In the code, the python_version package spec is set in the query payload but not the in the update_mask.
https://github.com/googleapis/python-aiplatform/blob/3eb38bf1f566545f5a6aba16b356cb2e4c148992/vertexai/_genai/agent_engines.py#L1092-L1101

Dominant language
Python
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Forks
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Avg merge
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Merged PRs (30d)
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