Fix AttributeError when accessing Response.text with Payload body

[wavebyrd]

Summary

When Response.body is set to a value that gets converted to a Payload without a decode method (e.g., AsyncIterablePayload, BodyPartReader), accessing Response.text would raise an unhelpful AttributeError:

>>> from aiohttp.web_response import Response
>>> r = Response()
>>> r.body = some_async_iterator
>>> r.text
AttributeError: 'AsyncIterablePayload' object has no attribute 'decode'

Changes

• Modified Response.text property to check for bytes/bytearray first
• For Payload objects, checks if decode method exists before calling it
• Raises a clear TypeError with guidance when the body type doesn't support text access

Test Plan

• Existing tests in test_payload_body_get_text already cover this case
• The test expects TypeError for payloads like async_iter() and BodyPartReader

Fixes #2928

[codecov]

Codecov Report

❌ Patch coverage is 75.00000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 99.10%. Comparing base (d9f9207) to head (ebf7b86).
⚠️ Report is 6 commits behind head on master.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
aiohttp/web_response.py	75.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #12239      +/-   ##
==========================================
- Coverage   99.11%   99.10%   -0.01%     
==========================================
  Files         130      130              
  Lines       45373    45407      +34     
  Branches     2397     2400       +3     
==========================================
+ Hits        44970    45002      +32     
- Misses        271      274       +3     
+ Partials      132      131       -1     

Flag	Coverage Δ
CI-GHA	98.96% <75.00%> (-0.01%)	⬇️
OS-Linux	98.70% <75.00%> (-0.02%)	⬇️
OS-Windows	96.97% <75.00%> (-0.01%)	⬇️
OS-macOS	97.85% <75.00%> (-0.02%)	⬇️
Py-3.10.11	97.40% <75.00%> (-0.01%)	⬇️
Py-3.10.19	?
Py-3.10.20	97.89% <75.00%> (-0.01%)	⬇️
Py-3.11.14	?
Py-3.11.15	98.09% <75.00%> (-0.01%)	⬇️
Py-3.11.9	97.61% <75.00%> (-0.01%)	⬇️
Py-3.12.10	97.70% <75.00%> (-0.01%)	⬇️
Py-3.12.12	?
Py-3.12.13	98.17% <75.00%> (-0.01%)	⬇️
Py-3.13.12	98.43% <75.00%> (-0.01%)	⬇️
Py-3.14.3	98.48% <75.00%> (-0.01%)	⬇️
Py-3.14.3t	97.49% <75.00%> (-0.01%)	⬇️
Py-pypy3.11.13-7.3.20	97.52% <75.00%> (-0.02%)	⬇️
VM-macos	97.85% <75.00%> (-0.02%)	⬇️
VM-ubuntu	98.70% <75.00%> (-0.02%)	⬇️
VM-windows	96.97% <75.00%> (-0.01%)	⬇️

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[codspeed-hq]

Merging this PR will not alter performance

✅ 59 untouched benchmarks

---

_{Comparing wavebyrd:fix-response-text-attributeerror-2928 (ebf7b86) with master (a618a87)¹}

Footnotes

1. No successful run was found on master (6f059db) during the generation of this report, so a618a87 was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩

[wavebyrd]

Ping - this fixes AttributeError when Response.text is accessed with Payload body. Let me know if any changes needed!

[Dreamsorcerer]

Ping - this fixes AttributeError when Response.text is accessed with Payload body. Let me know if any changes needed!

Do you not see the comment above?

[wavebyrd]

Thanks for the review feedback! I've updated to use the try/except pattern - much cleaner. The isinstance check for bytes/bytearray was redundant since they have decode() anyway.

[Dreamsorcerer]

Can we get a test to cover the new code?