* «the SQLModel docs»: «die SQLModel-Dokumentation»
* «the docs»: «die Dokumentation» (use singular case)
* «the env var»: «die Umgebungsvariable»
* «the `PATH` environment variable»: «die `PATH`-Umgebungsvariable»
* «the `PATH`»: «der `PATH`»
* «the `requirements.txt`»: «die `requirements.txt`»
* «the API Router»: «der API-Router»
* «the Authorization-Header»: «der Autorisierungsheader»

///

The `oauth2_scheme` variable is an instance of `OAuth2PasswordBearer`, but it is also a "callable".

It could be called as:

```Python
oauth2_scheme(some, parameters)
```

So, it can be used with `Depends`.

            TransportException exception = new TransportException("Test");

            assertTrue(exception instanceof IOException);

            // Should be able to assign to IOException variable
            IOException ioException = exception;
            assertNotNull(ioException);
        }

        @Test
        @DisplayName("Should work in catch blocks for IOException")

在许多情况下，环境变量的用途和适用性并不是很明显。但是在开发过程中，它们会在许多不同的场景中出现，因此了解它们是很有必要的。

    private final String name;
    private final ImmutableList<Type> bounds;

    TypeVariableImpl(D genericDeclaration, String name, Type[] bounds) {
      disallowPrimitiveType(bounds, "bound for type variable");
      this.genericDeclaration = checkNotNull(genericDeclaration);
      this.name = checkNotNull(name);
      this.bounds = ImmutableList.copyOf(bounds);
    }

    @Keep
    public Type[] getBounds() {

```Python
user_in = UserIn(username="john", password="secret", email="******@****.***")
```

and then we call:

```Python
user_dict = user_in.model_dump()
```

we now have a `dict` with the data in the variable `user_dict` (it's a `dict` instead of a Pydantic model object).

And if we call:

```Python
print(user_dict)
```

we would get a Python `dict` with:

```Python
{
    'username': 'john',

    public void addReplyTo(String replyTo, String personal) {
        doAddReplyTo(replyTo, personal);
    }

    // -----------------------------------------------------
    //                                  Application Variable
    //                                  --------------------
    /**
     * Set the value of hostname, used in parameter comment. <br>

Now, when the program loads things in memory, for example, a machine learning model in a variable, or the contents of a large file in a variable, all that **consumes a bit of the memory (RAM)** of the server.

在許多情況下，環境變數的用途和適用性可能不會立刻顯現。但是在開發過程中，它們會在許多不同的場景中出現，因此瞭解它們是非常必要的。

Vous écrivez du python standard avec des annotations de types:

```Python
from datetime import date

from pydantic import BaseModel

# Déclare une variable comme étant une str
# et profitez de l'aide de votre IDE dans cette fonction
def main(user_id: str):
    return user_id


# Un modèle Pydantic
class User(BaseModel):
    id: int
    name: str