扩展@Josh_Bode的回答，这里是我自己的PyYAML解决方案，它的优点是yaml.Loader的一个自包含子类。它不依赖于任何模块级的全局变量，也不依赖于修改yaml模块的全局状态。

import yaml, os

class IncludeLoader(yaml.Loader):                                                 
    """                                                                           
    yaml.Loader subclass handles "!include path/to/foo.yml" directives in config  
    files.  When constructed with a file object, the root path for includes       
    defaults to the directory containing the file, otherwise to the current       
    working directory. In either case, the root path can be overridden by the     
    `root` keyword argument.                                                      

    When an included file F contain its own !include directive, the path is       
    relative to F's location.                                                     

    Example:                                                                      
        YAML file /home/frodo/one-ring.yml:                                       
            ---                                                                   
            Name: The One Ring                                                    
            Specials:                                                             
                - resize-to-wearer                                                
            Effects: 
                - !include path/to/invisibility.yml                            

        YAML file /home/frodo/path/to/invisibility.yml:                           
            ---                                                                   
            Name: invisibility                                                    
            Message: Suddenly you disappear!                                      

        Loading:                                                                  
            data = IncludeLoader(open('/home/frodo/one-ring.yml', 'r')).get_data()

        Result:                                                                   
            {'Effects': [{'Message': 'Suddenly you disappear!', 'Name':            
                'invisibility'}], 'Name': 'The One Ring', 'Specials':              
                ['resize-to-wearer']}                                             
    """                                                                           
    def __init__(self, *args, **kwargs):                                          
        super(IncludeLoader, self).__init__(*args, **kwargs)                      
        self.add_constructor('!include', self._include)                           
        if 'root' in kwargs:                                                      
            self.root = kwargs['root']                                            
        elif isinstance(self.stream, file):                                       
            self.root = os.path.dirname(self.stream.name)                         
        else:                                                                     
            self.root = os.path.curdir                                            

    def _include(self, loader, node):                                    
        oldRoot = self.root                                              
        filename = os.path.join(self.root, loader.construct_scalar(node))
        self.root = os.path.dirname(filename)                           
        data = yaml.load(open(filename, 'r'))                            
        self.root = oldRoot                                              
        return data                                                      

可能在问问题时不支持，但你可以将其他YAML文件导入其中:

imports: [/your_location_to_yaml_file/Util.area.yaml]

虽然我没有任何在线参考资料，但这对我来说很有用。

标准YAML 1.2本身不包括这个特性。尽管如此，许多实现提供了一些扩展来实现这一点。

我给出了一种使用Java和snakeyaml:1.24(用于解析/发出YAML文件的Java库)来实现它的方法，它允许创建一个自定义YAML标记来实现以下目标(你会看到我用它来加载在几个YAML文件中定义的测试套件，并且我让它作为一个目标测试:节点的包含列表工作):

# ... yaml prev stuff

tests: !include
  - '1.hello-test-suite.yaml'
  - '3.foo-test-suite.yaml'
  - '2.bar-test-suite.yaml'

# ... more yaml document

下面是允许处理!include标记的单类Java。文件从classpath (Maven资源目录)加载:

/**
 * Custom YAML loader. It adds support to the custom !include tag which allows splitting a YAML file across several
 * files for a better organization of YAML tests.
 */
@Slf4j   // <-- This is a Lombok annotation to auto-generate logger
public class MyYamlLoader {

    private static final Constructor CUSTOM_CONSTRUCTOR = new MyYamlConstructor();

    private MyYamlLoader() {
    }

    /**
     * Parse the only YAML document in a stream and produce the Java Map. It provides support for the custom !include
     * YAML tag to split YAML contents across several files.
     */
    public static Map<String, Object> load(InputStream inputStream) {
        return new Yaml(CUSTOM_CONSTRUCTOR)
                .load(inputStream);
    }


    /**
     * Custom SnakeYAML constructor that registers custom tags.
     */
    private static class MyYamlConstructor extends Constructor {

        private static final String TAG_INCLUDE = "!include";

        MyYamlConstructor() {
            // Register custom tags
            yamlConstructors.put(new Tag(TAG_INCLUDE), new IncludeConstruct());
        }

        /**
         * The actual include tag construct.
         */
        private static class IncludeConstruct implements Construct {

            @Override
            public Object construct(Node node) {
                List<Node> inclusions = castToSequenceNode(node);
                return parseInclusions(inclusions);
            }

            @Override
            public void construct2ndStep(Node node, Object object) {
                // do nothing
            }

            private List<Node> castToSequenceNode(Node node) {
                try {
                    return ((SequenceNode) node).getValue();

                } catch (ClassCastException e) {
                    throw new IllegalArgumentException(String.format("The !import value must be a sequence node, but " +
                            "'%s' found.", node));
                }
            }

            private Object parseInclusions(List<Node> inclusions) {

                List<InputStream> inputStreams = inputStreams(inclusions);

                try (final SequenceInputStream sequencedInputStream =
                             new SequenceInputStream(Collections.enumeration(inputStreams))) {

                    return new Yaml(CUSTOM_CONSTRUCTOR)
                            .load(sequencedInputStream);

                } catch (IOException e) {
                    log.error("Error closing the stream.", e);
                    return null;
                }
            }

            private List<InputStream> inputStreams(List<Node> scalarNodes) {
                return scalarNodes.stream()
                        .map(this::inputStream)
                        .collect(toList());
            }

            private InputStream inputStream(Node scalarNode) {
                String filePath = castToScalarNode(scalarNode).getValue();
                final InputStream is = getClass().getClassLoader().getResourceAsStream(filePath);
                Assert.notNull(is, String.format("Resource file %s not found.", filePath));
                return is;
            }

            private ScalarNode castToScalarNode(Node scalarNode) {
                try {
                    return ((ScalarNode) scalarNode);

                } catch (ClassCastException e) {
                    throw new IllegalArgumentException(String.format("The value must be a scalar node, but '%s' found" +
                            ".", scalarNode));
                }
            }
        }

    }

}

使用Yglu，你可以像这样导入其他文件:

A.yaml

foo: !? $import('B.yaml')

B.yaml

bar: Hello

$ yglu A.yaml
foo:
  bar: Hello

因为$import是一个函数，你也可以传递一个表达式作为参数:

  dep: !- b
  foo: !? $import($_.dep.toUpper() + '.yaml')

这将得到与上面相同的输出。

声明:我是Yglu的作者。

不幸的是，YAML在其标准中没有提供这个功能。

但是如果你正在使用Ruby，有一个gem通过扩展Ruby YAML库来提供你所要求的功能: https://github.com/entwanderer/yaml_extend

不，标准YAML不包括任何类型的“import”或“include”语句。