# Migrar do Pydantic v1 para o Pydantic v2 { #migrate-from-pydantic-v1-to-pydantic-v2 }

Se você tem uma aplicação FastAPI antiga, pode estar usando o Pydantic versão 1.

O FastAPI tem suporte ao Pydantic v1 ou v2 desde a versão 0.100.0.

Se você tiver o Pydantic v2 instalado, ele será utilizado. Se, em vez disso, tiver o Pydantic v1, será ele que será utilizado.

                                               value="${f:h(sortOrder)}" class="form-control"
                                               min="0" max="100000">
                                    </div>
                                </div>
                            </div>
                            <div class="card-footer">

            assertEquals(2000L * 4 * 1024, fileFsFullSizeInfo.getCapacity());
            assertEquals(2000L * 4 * 1024, fileFsFullSizeInfo.getCapacity());
            assertEquals(1000L * 4 * 1024, fileFsFullSizeInfo.getFree());
            assertEquals(1000L * 4 * 1024, fileFsFullSizeInfo.getFree());
        }

        @Test
        @DisplayName("Should update state on subsequent decode calls")

        void testVerifySignatureSuccess() {
            testBlock.setDigest(mockDigest);
            testBlock.setErrorCode(0);
            byte[] buffer = new byte[100];

            when(mockDigest.verify(buffer, 0, 100, 0, testBlock)).thenReturn(false);

            assertTrue(testBlock.verifySignature(buffer, 0, 100));
            assertFalse(testBlock.isVerifyFailed());
        }

        @Test

	"sort"
	"sync"
	"time"

	"github.com/google/uuid"
	jsoniter "github.com/json-iterator/go"
	"github.com/klauspost/compress/s2"
	"github.com/valyala/bytebufferpool"
)

const (
	defaultLimit = 100000 // Default store limit.
	defaultExt   = ".unknown"
	compressExt  = ".snappy"
)

// errLimitExceeded error is sent when the maximum limit is reached.
var errLimitExceeded = errors.New("the maximum store limit reached")

      this.multiset = multiset;
      this.keys = keys;
    }

    @Override
    public int[] call() {
      int iterations = 100000;
      int nKeys = keys.size();
      int[] deltas = new int[nKeys];
      Operation[] operations = Operation.values();
      for (int i = 0; i < iterations; i++) {
        int keyIndex = random.nextInt(nKeys);

            final BigInteger firstBigInt = BigInteger.valueOf(first);
            BigInteger completeBigInt = lastBigInt.add(firstBigInt.shiftLeft(32));
            completeBigInt = completeBigInt.divide(BigInteger.valueOf(10000L));
            completeBigInt = completeBigInt.add(BigInteger.valueOf(-SmbConstants.MILLISECONDS_BETWEEN_1970_AND_1601));
            date = new Date(completeBigInt.longValue());
        }

        return date;

    @Test
    public void testSafeMultiply() throws Exception {
        assertEquals(20, validator.safeMultiply(4, 5));
        assertEquals(-20, validator.safeMultiply(-4, 5));
        assertEquals(0, validator.safeMultiply(0, 1000));
    }

    @Test
    public void testSafeMultiplyOverflow() throws Exception {
        assertThrows(SmbException.class, () -> {
            validator.safeMultiply(Integer.MAX_VALUE, 2);
        });

	"io"
	"sync"
	"sync/atomic"
	"time"

	"github.com/google/uuid"
	"github.com/minio/madmin-go/v3"
	"github.com/minio/pkg/v3/wildcard"
	"github.com/tinylib/msgp/msgp"
)

const (
	mrfOpsQueueSize = 100000
)

const (
	healDir              = ".heal"
	healMRFDir           = bucketMetaPrefix + SlashSeparator + healDir + SlashSeparator + "mrf"
	healMRFMetaFormat    = 1
	healMRFMetaVersionV1 = 1
)

# Migrate from Pydantic v1 to Pydantic v2 { #migrate-from-pydantic-v1-to-pydantic-v2 }

If you have an old FastAPI app, you might be using Pydantic version 1.

FastAPI version 0.100.0 had support for either Pydantic v1 or v2. It would use whichever you had installed.

FastAPI version 0.119.0 introduced partial support for Pydantic v1 from inside of Pydantic v2 (as `pydantic.v1`), to facilitate the migration to v2.