#### Unwrapping a `dict` and extra keywords

And then adding the extra keyword argument `hashed_password=hashed_password`, like in:

```Python
UserInDB(**user_in.dict(), hashed_password=hashed_password)
```

...ends up being like:

```Python
UserInDB(
    username = user_dict["username"],
    password = user_dict["password"],
    email = user_dict["email"],

	File() string
	// Base reports the position base of the token.
	Base() *src.PosBase
	// SetBase sets the position base.
	SetBase(*src.PosBase)
	// Line reports the source line number of the token.
	Line() int
	// Col reports the source column number of the token.
	Col() int
	// Close does any teardown required.
	Close()
}

// A Token is a scan token plus its string value.

			}, clause.Where{
				Exprs: []clause.Expression{clause.Or(clause.Gt{Column: "score", Value: 100}, clause.Like{Column: "name", Value: "%linus%"})},
			}},
			"SELECT * FROM `users` WHERE `users`.`id` = ? AND `age` > ? OR `name` <> ? AND (`score` > ? OR `name` LIKE ?)",
			[]interface{}{"1", 18, "jinzhu", 100, "%linus%"},
		},
		{
			[]clause.Interface{clause.Select{}, clause.From{}, clause.Where{

  }

  fun assertRequests(vararg expectedHosts: String?) {
    assertThat(requestedHosts).containsExactly(*expectedHosts)
    requestedHosts.clear()
  }

  /** Allocates and returns `count` fake IPv4 addresses like [255.0.0.100, 255.0.0.101].  */
  fun allocate(count: Int): List<InetAddress> {
    val from = nextAddress
    nextAddress += count
    return (from until nextAddress)
      .map {

### Project file structure

Let's say your project file structure looks like this:

```
.
├── app
│   ├── __init__.py
│   ├── main.py
```

Now create a directory to store those static files.

Your new file structure could look like this:

```
.
├── app
│   ├── __init__.py
│   ├── main.py
└── static/
```

### Download the files

    return result
  }
}

internal data class AlgorithmIdentifier(
  /** An OID string like "1.2.840.113549.1.1.11" for sha256WithRSAEncryption. */
  val algorithm: String,
  /** Parameters of a type implied by [algorithm]. */
  val parameters: Any?,
)

internal data class AttributeTypeAndValue(
  /** An OID string like "2.5.4.11" for organizationalUnitName. */
  val type: String,
  val value: Any?,
)

Aso, when returning several objects, like in `get_users`, we directly call `list`, like in:

```Python
list(models.User.select())
```

=== "Python"

    ```Python
    {!> ../../../docs_src/generate_clients/tutorial004.py!}
    ```

=== "Node.js"

    ```Javascript
    {!> ../../../docs_src/generate_clients/tutorial004.js!}
    ```

Later, for your production application, you might want to use a database server like **PostgreSQL**.

!!! tip
    You could adopt ideas from the section about SQLAlchemy ORM ([SQL (Relational) Databases](../tutorial/sql-databases.md){.internal-link target=_blank}), like using utility functions to perform operations in the database, independent of your **FastAPI** code.

    }
  }

  /**
   * Reads a set of mapping lines like the following:
   *
   * ```
   *    180C; ; Map to nothing
   *    0041; 0061; Case map
   *    0390; 03B9 0308 0301; Case map
   * ```
   *
   * Each line maps from a single hexadecimal code point to zero or more hexadecimal code points.
   * Elements are delimited by semicolons with a comment at the end of the line.
   */