Bump fastapi from 0.73.0 to 0.74.0

[dependabot]

Bumps fastapi from 0.73.0 to 0.74.0.

Release notes

Sourced from fastapi's releases.

0.74.0

Breaking Changes

• ✨ Update internal AsyncExitStack to fix context for dependencies with yield. PR #4575 by @​tiangolo.

Dependencies with yield can now catch HTTPException and custom exceptions. For example:

async def get_database():
    with Session() as session:
        try:
            yield session
        except HTTPException:
            session.rollback()
            raise
        finally:
            session.close()

After the dependency with yield handles the exception (or not) the exception is raised again. So that any exception handlers can catch it, or ultimately the default internal ServerErrorMiddleware.

If you depended on exceptions not being received by dependencies with yield, and receiving an exception breaks the code after yield, you can use a block with try and finally:

async def do_something():
    try:
        yield something
    finally:
        some_cleanup()

...that way the finally block is run regardless of any exception that might happen.

Features

• The same PR #4575 from above also fixes the contextvars context for the code before and after yield. This was the main objective of that PR.

This means that now, if you set a value in a context variable before yield, the value would still be available after yield (as you would intuitively expect). And it also means that you can reset the context variable with a token afterwards.

For example, this works correctly now:

from contextvars import ContextVar
from typing import Any, Dict, Optional
legacy_request_state_context_var: ContextVar[Optional[Dict[str, Any]]] = ContextVar(
"legacy_request_state_context_var", default=None
)
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Commits

• 1ce16c2 🔖 Release version 0.74.0
• 03d4d4c 📝 Update release notes
• 2d2f1de 📝 Update release notes
• 59e3648 🔧 Add Striveworks sponsor (#4596)
• 4fcb003 📝 Update release notes
• 9d56a3c ✨ Update internal AsyncExitStack to fix context for dependencies with `yiel...
• 78b07cb 📝 Update release notes
• 6034f80 💚 Only build docs on push when on master to avoid duplicate runs from PRs (#4...
• b93f8a7 📝 Update release notes
• 618c99d 👥 Update FastAPI People (#4502)
• See full diff in compare view

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