After that, you would need to **install** FastAPI and any other **packages** you want to use.

To install packages you would normally use the `pip` command that comes with Python (or similar alternatives).

Nevertheless, if you just use `pip` directly, the packages would be installed in your **global Python environment** (the global installation of Python).

any other pertinent obligations, then as a consequence you may not
distribute the Program at all. For example, if a patent license would
not permit royalty-free redistribution of the Program by all those who
receive copies directly or indirectly through you, then the only way you
could satisfy both it and this License would be to refrain entirely from
distribution of the Program.

If any portion of this section is held invalid or unenforceable under

     the Council of 11 March 1996 on the legal protection of databases,
     as amended and/or succeeded, as well as other essentially
     equivalent rights anywhere in the world.

  k. You means the individual or entity exercising the Licensed Rights
     under this Public License. Your has a corresponding meaning.


Section 2 -- Scope.

  a. License grant.

                                                       askance--
Said he thanked the whiting kindly, but he would not join the
   dance.
    Would not, could not, would not, could not, would not join
        the dance.
    Would not, could not, would not, could not, could not join
        the dance.

`"What matters it how far we go?" his scaly friend replied.

* ✍ 🛁 📁 `__init__.py`.
* ✍ `main.py` 📁 ⏮️:

```Python
from typing import Union

from fastapi import FastAPI

app = FastAPI()


@app.get("/")
def read_root():
    return {"Hello": "World"}


@app.get("/items/{item_id}")
def read_item(item_id: int, q: Union[str, None] = None):
    return {"item_id": item_id, "q": q}
```

### 📁

🔜 🎏 🏗 📁 ✍ 📁 `Dockerfile` ⏮️:

from .main import app

client = TestClient(app)


def test_text_get():
    response = client.get("/text")
    assert response.status_code == 200, response.text
    assert response.json() == "Hello World"


def test_nonexistent():
    response = client.get("/nonexistent")
    assert response.status_code == 404, response.text
    assert response.json() == {"detail": "Not Found"}


def test_path_foobar():

    assertThat(orig.toString())
        .contains("Exception thrown from implementation: class java.lang.StackOverflowError");
  }

  // Regression test for a case where we would fail to execute listeners immediately on done futures
  // this would be observable from an afterDone callback
  public void testListenersExecuteImmediately_fromAfterDone() {
    AbstractFuture<String> f =
        new AbstractFuture<String>() {

This is what you would want to do in **most cases**, for example:

* Using **Kubernetes** or similar tools
* When running on a **Raspberry Pi**
* Using a cloud service that would run a container image for you, etc.

### Package Requirements

You would normally have the **package requirements** for your application in some file.

response = requests.get("http://example.com/some/url")
```

Відповідна операція *роуту* API FastAPI може виглядати так:

```Python hl_lines="1"
@app.get("/some/url")
def read_url():
     return {"message": "Hello World"}
```

Зверніть увагу на схожість у `requests.get(...)` і `@app.get(...)`.

/// check | "Надихнуло **FastAPI** на"

* Майте простий та інтуїтивно зрозумілий API.

Depois de ativar o ambiente virtual, você pode executar seu programa, e ele usará o Python dentro do seu ambiente virtual com os pacotes que você instalou lá.

<div class="termy">

```console
$ python main.py

Hello World
```

</div>

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