## Pydantic 特性 { #pydantic-features }

**FastAPI** 和 [**Pydantic**](https://docs.pydantic.dev/) 完全兼容（并基于）。所以，你有的其他的 Pydantic 代码也能正常工作。

兼容包括基于 Pydantic 的外部库，例如用于数据库的 <abbr title="Object-Relational Mapper - 对象关系映射">ORM</abbr>s、<abbr title="Object-Document Mapper - 对象文档映射">ODM</abbr>s。

这也意味着在很多情况下，你可以将从请求中获得的相同对象**直接传到数据库**，因为所有的验证都是自动的。

反之亦然，在很多情况下，你也可以将从数据库中获取的对象**直接传到客户端**。

    }

    /**
     * Creates a CURL request from the provided header string.
     *
     * @param header the header string containing HTTP method and path
     * @return CURL request object or null if header is invalid
     */
    private CurlRequest getCurlRequest(final String header) {
        if (StringUtil.isBlank(header)) {
            return null;
        }

        assertEquals("POST", responseData.getMethod());
    }

    @Test
    public void test_responseData_metaDataMap() {
        final ResponseData responseData = new ResponseData();
        final Map<String, Object> metaDataMap = responseData.getMetaDataMap();
        metaDataMap.put("author", "John Doe");
        metaDataMap.put("keywords", new String[] { "java", "search" });

        assertNotNull(responseData.getMetaDataMap());

      setHeader("Connection", "Upgrade")
      setHeader("Upgrade", "websocket")
      body = null
      webSocketListener = listener
    }

  override fun toString(): String = status

  companion object {
    private const val CHUNKED_BODY_HEADER = "Transfer-encoding: chunked"
  }

  }

  public void testEntrySet() {
    Multiset<Color> ms = EnumMultiset.create(Color.class);
    ms.add(Color.BLUE, 3);
    ms.add(Color.YELLOW, 1);
    ms.add(Color.RED, 2);

    Set<Object> uniqueEntries = Sets.newIdentityHashSet();
    uniqueEntries.addAll(ms.entrySet());
    assertEquals(3, uniqueEntries.size());
  }

  // Wrapper of EnumMultiset factory methods, because we need to skip create(Class).

            public Optional<UnaryOperator<String>> getInterpolationSource() {
                return Optional.ofNullable(interpolationSource);
            }

            @Override
            public boolean equals(Object o) {
                return o instanceof DefaultSettingsBuilderRequest that
                        && Objects.equals(installationSettingsSource, that.installationSettingsSource)

     */
    @Nonnull
    Map<String, String> getEffectiveProperties();

    /**
     * Returns the start time of the session.
     *
     * @return the start time as an Instant object, never {@code null}
     */
    @Nonnull
    Instant getStartTime();

    /**
     * Gets the directory of the topmost project being built, usually the current directory or the

   <span style="background-color:#007166"><font color="#D3D7CF"> module </font></span>  🐍 main.py

     <span style="background-color:#007166"><font color="#D3D7CF"> code </font></span>  Importing the FastAPI app object from the module with
             the following code:

// Copyright (c) 2015-2023 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful

// Copyright (c) 2015-2023 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful