如果你寫帶有 Python 型別的程式碼：

```python
from datetime import date

from pydantic import BaseModel

# 宣告一個變數為 string
# 並在函式中獲得 editor support
def main(user_id: str):
    return user_id


# 宣告一個 Pydantic model
class User(BaseModel):
    id: int
    name: str
    joined: date
```


可以像這樣來使用：

        }

        @Override
        public int hashCode() {
            return hashCode;
        }

        @Override
        public String toString() {
            return key + "=" + value;
        }

        @Override
        public void writeExternal(final ObjectOutput s) throws IOException {
            s.writeInt(hashCode);

    }

    boolean hasAnyNonFinite() {
      return hasAnyPositiveInfinity() || hasAnyNegativeInfinity() || hasAnyNaN();
    }

    @Override
    public String toString() {
      return values.toString();
    }

    private static ImmutableList<ManyValues> createAll() {
      ImmutableList.Builder<ManyValues> builder = ImmutableList.builder();

		writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
		return
	}
}

func parseJSONBody(ctx context.Context, body io.Reader, v any, encryptionKey string) error {
	data, err := io.ReadAll(body)
	if err != nil {
		return SRError{
			Cause: err,
			Code:  ErrSiteReplicationInvalidRequest,
		}
	}
	if encryptionKey != "" {

    @DisplayName("Test constructor with different info class constants")
    void testConstructorWithDifferentInfoClasses(byte infoClass, String description) {
        response = new Smb2QueryDirectoryResponse(mockConfig, infoClass);

        assertNotNull(response, "Should create response for " + description);
        assertNull(response.getResults());
    }

    )

    taskFaker.advanceUntil(250.ms)
    assertEvents(
      "take plan 1",
      "plan 0 cancel",
      "plan 0 TCP connect canceled",
    )
  }

  private fun assertEvents(vararg expected: String) {
    val actual = generateSequence { routePlanner.events.poll() }.toList()
    assertThat(actual).containsExactly(*expected)
  }

  private val Int.ms: Long
    get() = this * 1_000_000L

<img src="/img/python-types/image04.png">

Agora você sabe que precisa corrigí-lo, converta `age` em uma string com `str(age)`:

{* ../../docs_src/python_types/tutorial004_py39.py hl[2] *}

## Declarando Tipos { #declaring-types }

Você acabou de ver o local principal para declarar type hints. Como parâmetros de função.

Porque el editor conoce los tipos de las variables, no solo obtienes autocompletado, también obtienes chequeo de errores:

<img src="/img/python-types/image04.png">

Ahora sabes que debes corregirlo, convertir `age` a un string con `str(age)`:

{* ../../docs_src/python_types/tutorial004_py39.py hl[2] *}

## Declaración de tipos { #declaring-types }

      return Integer.MAX_VALUE;
    }
    if (big.compareTo(MIN_INT) < 0) {
      return Integer.MIN_VALUE;
    }
    return big.intValue();
  }

  private void assertOperationEquals(int a, int b, String op, int expected, int actual) {
    if (expected != actual) {
      fail("Expected for " + a + " " + op + " " + b + " = " + expected + ", but got " + actual);
    }
  }

   covered by this License.

   b) Accompany the Combined Work with a copy of the GNU GPL and this license
   document.

   c) For a Combined Work that displays copyright notices during
   execution, include the copyright notice for the Library among
   these notices, as well as a reference directing the user to the
   copies of the GNU GPL and this license document.