[waterWang]

Update the python-fastapi generator's requirements.txt template so the generated FastAPI server installs cleanly on Python 3.14.

Root cause: the template pins typing-extensions==4.13.2. Modern pydantic (2.13.x) requires typing-extensions>=4.14.1, so pip is forced to resolve an older pydantic, whose pydantic-core has no CPython 3.14 wheel — pip then tries to build it from source with an old PyO3 (0.24.1) that rejects Python 3.14, failing the pip install in Docker.

Changes (5 lines):

• typing-extensions 4.13.2 → 4.16.0 — unlocks pydantic ≥ 2.13 (its pydantic-core ships a cp314 wheel)
• httptools upper bound <0.7.0 → <0.9.0 — 0.7.1+/0.8.0 ship cp314 wheels (0.6.x has none)
• uvloop 0.21.0 → 0.22.1 — first release with cp314 wheels
• MarkupSafe 2.0.1 → 3.0.3 — first with cp314 wheels (2.0.1 has none)
• orjson 3.11.6 → 3.12.0 — newer wheel coverage (3.11.6 already has cp314)

All upgraded packages still provide CPython 3.10 wheels (the sample CI matrix), verified via pip dry-run against the 3.10 and 3.14 manylinux targets; the local install + import smoke test on 3.11 passes (fastapi TestClient, pydantic 2.13.4, jinja2/markupsafe, httptools/orjson/uvloop).

Fixes #24788.

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Summary by cubic

Updates the python-fastapi generator's requirements.mustache and sample requirements.txt so the generated FastAPI server installs cleanly on Python 3.14. The old pins forced pip to resolve an older pydantic whose pydantic-core has no CPython 3.14 wheel, so pip tried to build it from source and failed.

• Bumping typing-extensions to 4.16.0 unlocks pydantic ≥ 2.13, which ships CPython 3.14 wheels.
• Also bumps httptools, uvloop, MarkupSafe, and orjson to versions with CPython 3.14 wheels.
• All upgraded packages still provide CPython 3.10 wheels, verified against the sample CI matrix; the install and import smoke test passes on 3.11. Fixes [BUG] python-fastapi requirements.txt incompatible with Python 3.14 #24788.

^{Written for commit 0690fa6. Summary will update on new commits.}

[cubic-dev-ai]

No issues found across 2 files

_{Re-trigger cubic}

[wing328]

thanks for the contribution, which has been merged