Python SDK: metadata string value returned as datetime.date. The verified fix is Fixed in the non-GRPC client so date-like strings round-trip as strings (reporter confirmed). Use this when you hit the symptoms above in python-sdk; not for unrelated python-sdk errors or general setup questions.
TL;DR
Fixed in the non-GRPC client so date-like strings round-trip as strings (reporter confirmed). If you see datetime coercion in metadata, make sure you are on the fixed client version and using the non-GRPC path.
The error
Issue pinecone-io/python-sdk#161 (closed, 9 comments): ### Is this a new bug in the Pinecone Python client?
- [X] I believe this is a new bug in the Pinecone Python Client
- [X] I have searched the existing issues, and I could not find an existing issue for this bug
Fix
Fixed in the non-GRPC client so date-like strings round-trip as strings (reporter confirmed).
If you see datetime coercion in metadata, make sure you are on the fixed client version and using the non-GRPC path.
Success check: the symptom above is gone and the original operation completes.
When to use
You hit this exact symptom in python-sdk.
You want the verified fix without digging through the thread.
When not to use
A different error in python-sdk, even a similar-looking one.
General python-sdk setup or credential questions.
Compatibility
Python SDK (pinecone-io/python-sdk)
Variant phrasings
How to fix "metadata string value returned as datetime.date" in python-sdk
python-sdk: metadata string value returned as datetime.date
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Published recentlyPublished Oct 3, 2026. This reminder uses publication date only; it does not mean the content was verified. Review again after Apr 1, 2027.
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Published recentlyPublished Oct 3, 2026. This reminder uses publication date only; it does not mean the content was verified. Review again after Apr 1, 2027.