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docs/en/docs/tutorial/sql-databases.md
Each instance of the `SessionLocal` class will be a database session. The class itself is not a database session yet. But once we create an instance of the `SessionLocal` class, this instance will be the actual database session. We name it `SessionLocal` to distinguish it from the `Session` we are importing from SQLAlchemy. We will use `Session` (the one imported from SQLAlchemy) later.
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docs/en/docs/advanced/settings.md
If not provided, it's `None` by default, here we provide `"World"` as the default value to use. Then you could call that Python program: <div class="termy"> ```console // Here we don't set the env var yet $ python main.py // As we didn't set the env var, we get the default value Hello World from Python // But if we create an environment variable first $ export MY_NAME="Wade Wilson"
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docs/en/docs/advanced/events.md
In our code example above, we don't use it directly, but we pass it to FastAPI for it to use it. The `lifespan` parameter of the `FastAPI` app takes an **async context manager**, so we can pass our new `lifespan` async context manager to it. ```Python hl_lines="22" {!../../../docs_src/events/tutorial003.py!} ```
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docs/en/docs/tutorial/dependencies/classes-as-dependencies.md
```Python hl_lines="11" {!> ../../../docs_src/dependencies/tutorial001.py!} ``` But then we get a `dict` in the parameter `commons` of the *path operation function*. And we know that editors can't provide a lot of support (like completion) for `dict`s, because they can't know their keys and value types. We can do better... ## What makes a dependency Up to now you have seen dependencies declared as functions.
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docs_src/dependencies/tutorial008c_an_py39.py
app = FastAPI() class InternalError(Exception): pass def get_username(): try: yield "Rick" except InternalError: print("Oops, we didn't raise again, Britney 😱") @app.get("/items/{item_id}") def get_item(item_id: str, username: Annotated[str, Depends(get_username)]): if item_id == "portal-gun": raise InternalError(
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docs/en/docs/index.md
<div style="text-align: right; margin-right: 10%;">Kabir Khan - <strong>Microsoft</strong> <a href="https://github.com/tiangolo/fastapi/pull/26" target="_blank"><small>(ref)</small></a></div> --- "_We adopted the **FastAPI** library to spawn a **REST** server that can be queried to obtain **predictions**. [for Ludwig]_"
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fastapi/dependencies/utils.py
] = fastapi_specific_annotations[-1] else: fastapi_annotation = None if isinstance(fastapi_annotation, FieldInfo): # Copy `field_info` because we mutate `field_info.default` below. field_info = copy_field_info( field_info=fastapi_annotation, annotation=use_annotation )
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docs/he/docs/index.md
<div style="text-align: right; margin-right: 10%;">Kabir Khan - <strong>Microsoft</strong> <a href="https://github.com/tiangolo/fastapi/pull/26" target="_blank"><small>(ref)</small></a></div> --- "_We adopted the **FastAPI** library to spawn a **REST** server that can be queried to obtain **predictions**. [for Ludwig]_"
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docs/fa/docs/index.md
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docs/en/docs/tutorial/dependencies/dependencies-with-yield.md
```Python hl_lines="13-14" {!> ../../../docs_src/dependencies/tutorial008c.py!} ``` In this case, the client will see an *HTTP 500 Internal Server Error* response as it should, given that we are not raising an `HTTPException` or similar, but the server will **not have any logs** or any other indication of what was the error. 😱 ### Always `raise` in Dependencies with `yield` and `except`
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