optimize code for proxy handling of `urllib.request`
Open
Nobody has claimed this yet.
performance
stdlib
type-feature
- Dominant language
- Python
- Stars
- 77.2k
- Forks
- 35.9k
- PR merge metrics
- PR metrics pending
Description
Feature or enhancement
Proposal:
- the second loop of line starts from 1845 is duplicated from the first loop.
https://github.com/python/cpython/blob/2041a95e68ebf6d13f867e214ada28affa830669/Lib/urllib/request.py#L1817-L1853 - the registry access should be separated to a standalone function for cache, to be used by code like https://github.com/aio-libs/aiohttp/blob/e79b2d5df70a2644e81925cc49558962af91848d/aiohttp/client.py#L609-L617
https://github.com/python/cpython/blob/2041a95e68ebf6d13f867e214ada28affa830669/Lib/urllib/request.py#L2071-L2104 - the proxy setting from registry should be ignored when if proxies from environment exists? like the
proxy_bypass()
Should open a PR?
Has this already been discussed elsewhere?
This is a minor feature, which does not need previous discussion elsewhere
Links to previous discussion of this feature:
No response
Linked PRs
- gh-127767
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start in Lib/urllib/request.py around lines 1817-1853 and 2071-2104, then compare the linked aiohttp proxy handling. Clarify whether the goal includes deduplicating the loops, extracting cached registry access, and prioritizing environment proxies; done means the agreed proxy behavior is implemented and covered by appropriate urllib.request tests.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- networking
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100