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docs(logs): clarify attribute value types for Python logs #17921

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docs(logs): clarify attribute value types for Python logs
sergical May 28, 2026
e60aaef
docs(logs): stringify feature_flags example in Python best practices
sergical May 28, 2026
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3 changes: 2 additions & 1 deletion platform-includes/logs/best-practices/python.mdx
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Original file line number Diff line number Diff line change
Expand Up @@ -69,7 +69,8 @@ sentry_sdk.logger.info(

# Business context
"order_value": 149.99,
"feature_flags": ["new-checkout", "discount-v2"],
# Join lists into a string — array values aren't stored as attributes
"feature_flags": ",".join(["new-checkout", "discount-v2"]),
}
)
```
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6 changes: 6 additions & 0 deletions platform-includes/logs/usage/python.mdx
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Expand Up @@ -30,3 +30,9 @@ sentry_sdk.logger.error(
}
)
```

<Alert title="Attribute value types">

Attribute values should be primitives — strings, numbers, or booleans. Sentry's log storage only retains these scalar types, so other values are handled inconsistently: a `list` or `tuple` of same-typed scalars (for example `[1, 2, 3]`) is sent as an array, which is **not currently stored** and shows up empty in the Logs UI, while mixed lists and `dict`s are stored as their string representation. To keep a complex value searchable, serialize it to a string yourself before logging — for example `json.dumps(workflow_ids)`.

</Alert>
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