That way, you don't have to "install" your local version to be able to test every change.

/// note | Technical Details

This only happens when you install using this included `requirements.txt` instead of running `pip install fastapi` directly.

 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

* Wenn Sie die Frage nicht verstehen können, fragen Sie nach weiteren **Details**.

### Das Problem reproduzieren

In den meisten Fällen und bei den meisten Fragen ist etwas mit dem von der Person erstellten **eigenen Quellcode** los.

// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package cmd

import (
	"bytes"
	"context"

    * Xâu (`str`), định nghĩa độ dài lớn nhất, nhỏ nhất.
    * Số (`int`, `float`) với các giá trị lớn nhất, nhỏ nhất, etc.

* Validation cho nhiều kiểu dữ liệu bên ngoài như:
    * URL.
    * Email.
    * UUID.
    * ...và nhiều cái khác.

Tất cả validation được xử lí bằng những thiết lập tốt và mạnh mẽ của **Pydantic**.

### Bảo mật và xác thực

///

<img src="/img/tutorial/security/image08.png">

Chame o endpoint `/users/me/`, você receberá o retorno como:

```JSON
{
  "username": "johndoe",
  "email": "******@****.***",
  "full_name": "John Doe",
  "disabled": false
}
```

<img src="/img/tutorial/security/image09.png">

    /** Policy information level for server role. */
    public static final int POLICY_INFO_SERVER_ROLE = 6;
    /** Policy information class for modification. */
    /** Policy information level for modification details. */
    public static final int POLICY_INFO_MODIFICATION = 9;
    /** Policy information class for DNS domain. */
    /** Policy information level for DNS domain information. */

// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package cmd

import (
	"bufio"
	"bytes"
	"context"

CMP R0, R4 BGT crash MOVD R2, R4 MOVD R2, R6 MOVD R2, R8 MOVD R3, R5 MOVD R3, R7 MOVD R3, R9 ADDW $1, R5 ADDW $2, R7 ADDW $3, R9 incr: CMP R0, $64 BLT tail STMG R2, R9, (R1) ADDW $4, R3 ADDW $4, R5 ADDW $4, R7 ADDW $4, R9 MOVD $64(R1), R1 SUB $64, R0 BR incr tail: CMP R0, $0 BEQ crypt STMG R2, R3, (R1) ADDW $1, R3 MOVD $16(R1), R1 SUB $16, R0 BR tail crypt: STMG R2, R3, (R12) // update next counter value MOVD fn+0(FP), R0 // function code (encryption) MOVD key_base+8(FP), R1 // key MOVD buf_base+80(FP),...

        assertEquals("{constraints.CreditCardNumber.message}", FessMessages.CONSTRAINTS_CreditCardNumber_MESSAGE);
        assertEquals("{constraints.EAN.message}", FessMessages.CONSTRAINTS_EAN_MESSAGE);
        assertEquals("{constraints.Email.message}", FessMessages.CONSTRAINTS_Email_MESSAGE);
        assertEquals("{constraints.Length.message}", FessMessages.CONSTRAINTS_Length_MESSAGE);