do FastAPI.

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///

### Não faça perguntas no chat

Then you declare your data model as a class that inherits from `BaseModel`.

Use standard Python types for all the attributes:

{* ../../docs_src/body/tutorial001_py310.py hl[5:9] *}


The same as when declaring query parameters, when a model attribute has a default value, it is not required. Otherwise, it is required. Use `None` to make it just optional.

For example, this model above declares a JSON "`object`" (or Python `dict`) like:

```JSON

```Python
q: str | None = Query(default=None, max_length=50)
```

This will validate the data, show a clear error when the data is not valid, and document the parameter in the OpenAPI schema *path operation*.

### `Query` as the default value or in `Annotated` { #query-as-the-default-value-or-in-annotated }

Keep in mind that when using `Query` inside of `Annotated` you cannot use the `default` parameter for `Query`.

    * This doesn't refer to the file, nor to the code, it refers **specifically** to the thing that is being **executed** and managed by the operating system.
* Any program, any code, **can only do things** when it is being **executed**. So, when there's a **process running**.
* The process can be **terminated** (or "killed") by you, or by the operating system. At that point, it stops running/being executed, and it can **no longer do things**.

## Where are Packages Installed { #where-are-packages-installed }

When you install Python, it creates some directories with some files in your computer.

Some of these directories are the ones in charge of having all the packages you install.

When you run:

<div class="termy">

```console

	}

	results, err := gorm.G[User](DB).Where("name IN (?)", gorm.G[User](DB).Select("name").Where("name LIKE ?", "GenericsSubquery%")).Find(ctx)
	if err != nil {
		t.Fatalf("got error: %v", err)
	}

	if len(results) != 4 {
		t.Errorf("Four users should be found, instead found %d", len(results))
	}

   */
  public TypeResolver where(Type formal, Type actual) {
    Map<TypeVariableKey, Type> mappings = new HashMap<>();
    populateTypeMappings(mappings, checkNotNull(formal), checkNotNull(actual));
    return where(mappings);
  }

  /** Returns a new {@code TypeResolver} with {@code variable} mapping to {@code type}. */
  TypeResolver where(Map<TypeVariableKey, ? extends Type> mappings) {

   */
  public TypeResolver where(Type formal, Type actual) {
    Map<TypeVariableKey, Type> mappings = new HashMap<>();
    populateTypeMappings(mappings, checkNotNull(formal), checkNotNull(actual));
    return where(mappings);
  }

  /** Returns a new {@code TypeResolver} with {@code variable} mapping to {@code type}. */
  TypeResolver where(Map<TypeVariableKey, ? extends Type> mappings) {

	})

	if tx = queryTx.Find(dest, conds...); tx.RowsAffected == 0 {
		if c, ok := tx.Statement.Clauses["WHERE"]; ok {
			if where, ok := c.Expression.(clause.Where); ok {
				tx.assignInterfacesToValue(where.Exprs)
			}
		}

		// initialize with attrs, conds
		if len(tx.Statement.attrs) > 0 {
			tx.assignInterfacesToValue(tx.Statement.attrs...)
		}
	}

        assertEquals(1, d.getSetupCount(), "setupCount parsed");
        // When bufDataStart was zero it should be set to totalParameterCount
        assertEquals(5, d.getBufferDataStart(), "bufDataStart inferred from totalParameterCount");
    }

    /**
     * Exercise readBytesWireFormat where both parameter and data are
     * copied in a single call.
     */
    @Test