docs_src/dependencies/tutorial007_py39.py

async def get_db():
    db = DBSession()
    try:
        yield db
    finally:
        db.close()
:sparkles: Add dependencies with yield (used as context managers) (#595) * :heavy_plus_sign: Add development/testing dependencies for Python 3.6 * :sparkles: Add concurrency submodule with contextmanager_in_threadpool * :sparkles: Add AsyncExitStack to ASGI scope in FastAPI app call * :sparkles: Use async stack for contextmanager-able dependencies including running in threadpool sync dependencies * :white_check_mark: Add tests for contextmanager dependencies including internal raise checks when exceptions should be handled and when not * :white_check_mark: Add test for fake asynccontextmanager raiser * :bug: Fix mypy errors and coverage * :mute: Remove development logs and prints * :white_check_mark: Add tests for sub-contextmanagers, background tasks, and sync functions * :bug: Fix mypy errors for Python 3.7 * :speech_balloon: Fix error texts for clarity * :memo: Add docs for dependencies with yield * :sparkles: Update SQL with SQLAlchemy tutorial to use dependencies with yield and add an alternative with a middleware (from the old tutorial) * :white_check_mark: Update SQL tests to remove DB file during the same tests * :white_check_mark: Add tests for example with middleware as a copy from the tests with dependencies with yield, removing the DB in the tests * :pencil2: Fix typos with suggestions from code review Co-Authored-By: dmontagu <35119617+dmontagu@users.noreply.github.com> 2019-10-09 13:01:58 -05:00			`async def get_db():`
			`db = DBSession()`
			`try:`
			`yield db`
			`finally:`
			`db.close()`