você o importa e cria uma "instância" da mesma maneira que faria com a classe `FastAPI`:

```Python hl_lines="1  3" title="app/routers/users.py"
{!../../docs_src/bigger_applications/app/routers/users.py!}
```

### *Operações de Rota* com `APIRouter`

E então você o utiliza para declarar suas *operações de rota*.

Utilize-o da mesma maneira que utilizaria a classe  `FastAPI`:

```Python hl_lines="6  11  16" title="app/routers/users.py"

Nós também declaramos um parâmetro especial do tipo `SecurityScopes`, importado de `fastapi.security`.

A classe `SecurityScopes` é semelhante à classe `Request` (`Request` foi utilizada para obter o objeto da requisição diretamente).

{* ../../docs_src/security/tutorial005_an_py310.py hl[9,106] *}

## Utilize os `scopes`

            Interface12.class,
            Interface1.class,
            Interface2.class,
            Class1.class,
            Object.class);
    makeUnmodifiable(types.interfaces().rawTypes())
        .containsExactly(
            Interface3.class,
            Interface12.class,
            Interface1.class,
            Interface2.class,
            Iterable.class);
    makeUnmodifiable(types.classes().rawTypes())

            Interface12.class,
            Interface1.class,
            Interface2.class,
            Class1.class,
            Object.class);
    makeUnmodifiable(types.interfaces().rawTypes())
        .containsExactly(
            Interface3.class,
            Interface12.class,
            Interface1.class,
            Interface2.class,
            Iterable.class);
    makeUnmodifiable(types.classes().rawTypes())

```

then it is a "callable".

## Classes as dependencies { #classes-as-dependencies_1 }

You might notice that to create an instance of a Python class, you use that same syntax.

For example:

```Python
class Cat:
    def __init__(self, name: str):
        self.name = name


fluffy = Cat(name="Mr Fluffy")
```

In this case, `fluffy` is an instance of the class `Cat`.

											}

											exprs = append(exprs, clause.Expr{SQL: onSQL, Vars: vars})
										}
									}
								}
							}

							return clause.Join{
								Type:  joinType,
								Table: clause.Table{Name: relation.FieldSchema.Table, Alias: tableAliasName},
								ON:    clause.Where{Exprs: exprs},
							}
						}

						parentTableName := clause.CurrentTable
						for idx, rel := range relations {

			break
		}
		queryDB = tx.Clauses(clause.Gt{Column: clause.Column{Table: clause.CurrentTable, Name: clause.PrimaryKey}, Value: primaryValue})
	}

	tx.RowsAffected = rowsAffected
	return tx
}

func (db *DB) assignInterfacesToValue(values ...interface{}) {
	for _, value := range values {
		switch v := value.(type) {
		case []clause.Expression:
			for _, expr := range v {

				for _, cond := range queryConds {
					if c, ok := cond.(clause.IN); ok && len(c.Values) == 0 {
						withoutConditions = true
						break
					}
				}

				if !withoutConditions && db.AddError(tx.Clauses(clause.Where{Exprs: queryConds}).Delete(modelValue).Error) != nil {
					return
				}
			case schema.Many2Many:
				var (
					queryConds     = make([]clause.Expression, 0, len(rel.References))

        dstIndex++;
        dst[dstIndex++] = (byte) (byteCount >> 8 & 0xFF);
        dstIndex += byteCount;

        /* Normally, without intervention everything would batch
         * with everything else. If the below clause evaluates true
         * the andx command will not be written and therefore the
         * response will not read a batched command and therefore
         * the 'received' member of the response object will not

	}

	for idx, lang := range langs {
		lang.Name = lang.Name + "_new"
		langs[idx] = lang
	}

	if err := DB.Clauses(clause.OnConflict{
		Columns:   []clause.Column{{Name: "code"}},
		DoUpdates: clause.AssignmentColumns([]string{"name"}),
	}, clause.Returning{}).CreateInBatches(&langs, len(langs)).Error; err != nil {
		t.Fatalf("failed to upsert, got %v", err)
	}

	for _, lang := range langs {