FastAPI version 0.100.0 prenait en charge soit Pydantic v1 soit v2. Il utilisait celle que vous aviez installée.

FastAPI version 0.119.0 a introduit une prise en charge partielle de Pydantic v1 depuis l'intérieur de Pydantic v2 (comme `pydantic.v1`), pour faciliter la migration vers v2.

FastAPI 0.126.0 a supprimé la prise en charge de Pydantic v1, tout en continuant à prendre en charge `pydantic.v1` pendant un certain temps.

   */
  private int compareLabel(String label, int offset) {
    int labelLen = label.length();
    int nodeLabelLen = stringPool.charAt(offset);
    int minLen = Math.min(nodeLabelLen, labelLen);
    for (int i = 0; i < minLen; i++) {
      char c1 = label.charAt(i);
      char c2 = stringPool.charAt(offset + 1 + i);
      if (c1 != c2) {
        return c1 - c2;
      }
    }
    return labelLen - nodeLabelLen;
  }

                retValue = retValue.substring(2);

                if (retValue.length() >= 2 && (retValue.charAt(1) == '|' || retValue.charAt(1) == ':')) {
                    // special case: if there is a windows drive letter, then keep the original return value
                    retValue = retValue.charAt(0) + ":" + retValue.substring(2);
                } else {
                    // Now we expect the host

        PropertiesUtils.store(
            Properties().apply(populateProperties),
            propertiesFile.get().asFile,
            comment.get(),
            Charsets.ISO_8859_1,
            "\n"
        )

         *
         * See [PropertiesUtils.store].
         */
        fun store(properties: Properties, file: File, comment: String? = null) {
            PropertiesUtils.store(properties, file, comment, Charsets.ISO_8859_1, "\n")
        }

        private
        fun propertiesFrom(data: Map<String, Any>): Properties = Properties().apply {
            putAll(data.map { (key, value) -> key to value.toString() })
        }

        pos += n;
    }

    public boolean lookingAt(char c) {
        return input.charAt(pos) == c;
    }

    public boolean lookingAt(CharSequence prefix) {
        int i = 0;
        int cpos = pos;
        while (i < prefix.length() && cpos < input.length()) {
            if (prefix.charAt(i) != input.charAt(cpos)) {
                return false;
            }
            i++;
            cpos++;
        }

  }

  public void testEquals() throws Exception {
    Method charAt = String.class.getMethod("charAt", int.class);
    Method concat = String.class.getMethod("concat", String.class);
    new EqualsTester()
        .addEqualityGroup(
            Subscriber.create(bus, "foo", charAt), Subscriber.create(bus, "foo", charAt))
        .addEqualityGroup(Subscriber.create(bus, "bar", charAt))
        .addEqualityGroup(Subscriber.create(bus, "foo", concat))

        destIndex += rlen;
      }
      lastEscape = index + 1;
    }

    // Copy leftover characters if there are any.
    int charsLeft = slen - lastEscape;
    if (charsLeft > 0) {
      int sizeNeeded = destIndex + charsLeft;
      if (destSize < sizeNeeded) {

        // Regrow and copy, expensive! No padding as this is the final copy.
        dest = growBuffer(dest, destIndex, sizeNeeded);

    from("src/main/resources-templates")
    into(layout.buildDirectory.dir("generated/resources-templates"))
    expand("projectVersion" to "${project.version}")
    filteringCharset = Charsets.UTF_8.toString()
  }

configure<JavaPluginExtension> {
  sourceSets.getByName("main").resources.srcDir(copyResourcesTemplates.get().outputs)
}

dependencies {
  api(projects.okhttp)

    String expected = begin + end;
    assertEquals(expected.charAt(0), joinedReader.read());
    CharStreams.skipFully(joinedReader, 1);
    assertEquals(expected.charAt(2), joinedReader.read());
    CharStreams.skipFully(joinedReader, 4);
    assertEquals(expected.charAt(7), joinedReader.read());
    CharStreams.skipFully(joinedReader, 1);
    assertEquals(expected.charAt(9), joinedReader.read());
    assertEquals(-1, joinedReader.read());