Add hishel

[karpetrosyan]

Project

hishel

Checklist

• I read CONTRIBUTING.md - awesome-python is a shortlist, not a catalog
• One project per PR
• PR title format: Add project-name
• Entry format: - [pypi-name](https://github.com/owner/repo) - Description ending with period.
• Display name is the PyPI package name
• Placed in an existing use case (new sections and subcategories are maintainer-only)
• Meets all Quality Requirements: active, stable, documented, at least 1 month old

Which Tier

Pick one:

• Obvious choice - a tool an experienced Python developer would name when asked "what do I use for this?"

Explain:

hishel is the RFC 9111 HTTP caching library for httpx and requests (sync and async). 5.6M downloads/month (pypistats), 1.x since Oct 2025, latest release Aug 2026

Displacement

Not needed — Caching had 4 entries, this makes 5.

Alternative placement: HTTP response caching is arguably its own use case, so an "HTTP Caching" subcategory under HTTP Clients (next to Clients and URL Manipulation) would be a more precise home. That is a structure change and maintainer-only, so this PR uses the existing Caching use case; happy to move it if you prefer the subcategory.

[karpetrosyan]

Thanks 🙏