Better typing

[asvetlov]

No description provided.

[codecov-io]

Codecov Report

Merging #5078 into master will decrease coverage by 0.01%.
The diff coverage is 94.44%.

@@            Coverage Diff             @@
##           master    #5078      +/-   ##
==========================================
- Coverage   97.65%   97.63%   -0.02%     
==========================================
  Files          43       43              
  Lines        8983     8999      +16     
  Branches     1412     1413       +1     
==========================================
+ Hits         8772     8786      +14     
- Misses         98       99       +1     
- Partials      113      114       +1     

Flag	Coverage Δ
#unit	97.63% <94.44%> (-0.02%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
aiohttp/web_app.py	97.30% <ø> (ø)
aiohttp/web_response.py	97.78% <ø> (ø)
aiohttp/web_runner.py	97.77% <ø> (ø)
aiohttp/web_urldispatcher.py	98.24% <93.54%> (-0.26%)	⬇️
aiohttp/client_proto.py	96.66% <100.00%> (ø)
aiohttp/client_reqrep.py	97.36% <100.00%> (ø)
aiohttp/tracing.py	100.00% <100.00%> (ø)
aiohttp/web_routedef.py	100.00% <100.00%> (ø)
aiohttp/worker.py	97.45% <100.00%> (ø)

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[aio-libs-github-bot]

💚 Backport successful

The PR was backported to the following branches:

• ✅ 3.7