[alexander-alderman-webb]

Description

See anthropics/anthropic-sdk-python@abd6424.
Since _iterator was changed from a member initialized in __init__ to a cached property, the SDK can and should use a global patch so we don't destroy the laziness of accessing the cached property.

A global patch is also more maintainable because we don't have to worry about double patching, etc ...

I've changed the generic parameter for Stream and AsyncStream to Any, since users can technically provide a custom parser.

Also fixed the following mypy errors when upgrading anthropic in uv.lock:

sentry_sdk/integrations/anthropic.py:786: error: Property "_iterator" defined in "Stream" is read-only  [misc]
sentry_sdk/integrations/anthropic.py:884: error: Property "_iterator" defined in "AsyncStream" is read-only  [misc]

Issues

Closes #8166

Reminders

• Please add tests to validate your changes, and lint your code using uv run ruff.
• Add GH Issue ID & Linear ID (if applicable)
• PR title should use conventional commit style (feat:, fix:, ref:, meta:)
• For external contributors: CONTRIBUTING.md, Sentry SDK development docs, Discord community

[github-actions]

Coverage Results 📊

✅ 136856 passed | ⏭️ 7456 skipped | Total: 144312 | Pass Rate: 94.83% | Execution Time: 452m 57s

All tests are passing successfully.

✅ Patch coverage is 93.75% (30 of 32 changed executable lines covered; target 80%).
Project statement coverage is 90.33% (unchanged from base (7ad4e1a) to head (a215e50)).

Changed files with executable lines (1)

File	Patch coverage	Changed executable lines
sentry_sdk/integrations/anthropic.py	93.75%	30/32 covered; missed: 279, 280

Coverage diff

@@            Coverage Diff             @@
##        master     #8163       +/-##
==========================================
  Coverage    90.33%    90.33%        —%
==========================================
  Files          203       203         —
  Tracked lines     26872     26900       +28
  Branches     10044     10056       +12
==========================================
+ Hits         24272     24298       +26
- Misses        2600      2602        +2
  Partials      1520      1520         —

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Version gate skips iterator wrapping

High Severity

The global _iterator patch is applied only when _iterator is a functools.cached_property, but per-instance wrapping is skipped for every Anthropic version >= 1.14. Those two checks are not complementary, so a 1.14+ install whose _iterator is still an eager attribute (or a different descriptor than functools.cached_property) gets neither wrap. Streaming spans then miss accumulated output data, and if the caller never calls close(), the span never finishes.

Additional Locations (2)

• sentry_sdk/integrations/anthropic.py#L931-L940
• sentry_sdk/integrations/anthropic.py#L284-L316

 

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[alexander-alderman-webb]

If they ever change it from being a cached property we want to degrade gracefully (and that's more important than finishing the span).
I know this looks weird but I use the version gate for the old behavior because we know that works without checking the type of _iterator and check that _iterator is a cached property otherwise to ensure forwards compatibility.