content: 
  from error import *
  
  from tokens import *
  from events import *
  from nodes import *
  
  from loader import *
  from dumper import *
  
  __version__ = '3.11'
  
  try:
      from cyaml import *
      __with_libyaml__ = True
  except ImportError:
      __with_libyaml__ = False
  
  def scan(stream, Loader=Loader):
      """
      Scan a YAML stream and produce scanning tokens.
      """
      loader = Loader(stream)
      try:
          while loader.check_token():
              yield loader.get_token()
      finally:
          loader.dispose()
  
  def parse(stream, Loader=Loader):
      """
      Parse a YAML stream and produce parsing events.
      """
      loader = Loader(stream)
      try:
          while loader.check_event():
              yield loader.get_event()
      finally:
          loader.dispose()
  
  def compose(stream, Loader=Loader):
      """
      Parse the first YAML document in a stream
      and produce the corresponding representation tree.
      """
      loader = Loader(stream)
      try:
          return loader.get_single_node()
      finally:
          loader.dispose()
  
  def compose_all(stream, Loader=Loader):
      """
      Parse all YAML documents in a stream
      and produce corresponding representation trees.
      """
      loader = Loader(stream)
      try:
          while loader.check_node():
              yield loader.get_node()
      finally:
          loader.dispose()
  
  def load(stream, Loader=Loader):
      """
      Parse the first YAML document in a stream
      and produce the corresponding Python object.
      """
      loader = Loader(stream)
      try:
          return loader.get_single_data()
      finally:
          loader.dispose()
  
  def load_all(stream, Loader=Loader):
      """
      Parse all YAML documents in a stream
      and produce corresponding Python objects.
      """
      loader = Loader(stream)
      try:
          while loader.check_data():
              yield loader.get_data()
      finally:
          loader.dispose()
  
  def safe_load(stream):
      """
      Parse the first YAML document in a stream
      and produce the corresponding Python object.
      Resolve only basic YAML tags.
      """
      return load(stream, SafeLoader)
  
  def safe_load_all(stream):
      """
      Parse all YAML documents in a stream
      and produce corresponding Python objects.
      Resolve only basic YAML tags.
      """
      return load_all(stream, SafeLoader)
  
  def emit(events, stream=None, Dumper=Dumper,
          canonical=None, indent=None, width=None,
          allow_unicode=None, line_break=None):
      """
      Emit YAML parsing events into a stream.
      If stream is None, return the produced string instead.
      """
      getvalue = None
      if stream is None:
          from StringIO import StringIO
          stream = StringIO()
          getvalue = stream.getvalue
      dumper = Dumper(stream, canonical=canonical, indent=indent, width=width,
              allow_unicode=allow_unicode, line_break=line_break)
      try:
          for event in events:
              dumper.emit(event)
      finally:
          dumper.dispose()
      if getvalue:
          return getvalue()
  
  def serialize_all(nodes, stream=None, Dumper=Dumper,
          canonical=None, indent=None, width=None,
          allow_unicode=None, line_break=None,
          encoding='utf-8', explicit_start=None, explicit_end=None,
          version=None, tags=None):
      """
      Serialize a sequence of representation trees into a YAML stream.
      If stream is None, return the produced string instead.
      """
      getvalue = None
      if stream is None:
          if encoding is None:
              from StringIO import StringIO
          else:
              from cStringIO import StringIO
          stream = StringIO()
          getvalue = stream.getvalue
      dumper = Dumper(stream, canonical=canonical, indent=indent, width=width,
              allow_unicode=allow_unicode, line_break=line_break,
              encoding=encoding, version=version, tags=tags,
              explicit_start=explicit_start, explicit_end=explicit_end)
      try:
          dumper.open()
          for node in nodes:
              dumper.serialize(node)
          dumper.close()
      finally:
          dumper.dispose()
      if getvalue:
          return getvalue()
  
  def serialize(node, stream=None, Dumper=Dumper, **kwds):
      """
      Serialize a representation tree into a YAML stream.
      If stream is None, return the produced string instead.
      """
      return serialize_all([node], stream, Dumper=Dumper, **kwds)
  
  def dump_all(documents, stream=None, Dumper=Dumper,
          default_style=None, default_flow_style=None,
          canonical=None, indent=None, width=None,
          allow_unicode=None, line_break=None,
          encoding='utf-8', explicit_start=None, explicit_end=None,
          version=None, tags=None):
      """
      Serialize a sequence of Python objects into a YAML stream.
      If stream is None, return the produced string instead.
      """
      getvalue = None
      if stream is None:
          if encoding is None:
              from StringIO import StringIO
          else:
              from cStringIO import StringIO
          stream = StringIO()
          getvalue = stream.getvalue
      dumper = Dumper(stream, default_style=default_style,
              default_flow_style=default_flow_style,
              canonical=canonical, indent=indent, width=width,
              allow_unicode=allow_unicode, line_break=line_break,
              encoding=encoding, version=version, tags=tags,
              explicit_start=explicit_start, explicit_end=explicit_end)
      try:
          dumper.open()
          for data in documents:
              dumper.represent(data)
          dumper.close()
      finally:
          dumper.dispose()
      if getvalue:
          return getvalue()
  
  def dump(data, stream=None, Dumper=Dumper, **kwds):
      """
      Serialize a Python object into a YAML stream.
      If stream is None, return the produced string instead.
      """
      return dump_all([data], stream, Dumper=Dumper, **kwds)
  
  def safe_dump_all(documents, stream=None, **kwds):
      """
      Serialize a sequence of Python objects into a YAML stream.
      Produce only basic YAML tags.
      If stream is None, return the produced string instead.
      """
      return dump_all(documents, stream, Dumper=SafeDumper, **kwds)
  
  def safe_dump(data, stream=None, **kwds):
      """
      Serialize a Python object into a YAML stream.
      Produce only basic YAML tags.
      If stream is None, return the produced string instead.
      """
      return dump_all([data], stream, Dumper=SafeDumper, **kwds)
  
  def add_implicit_resolver(tag, regexp, first=None,
          Loader=Loader, Dumper=Dumper):
      """
      Add an implicit scalar detector.
      If an implicit scalar value matches the given regexp,
      the corresponding tag is assigned to the scalar.
      first is a sequence of possible initial characters or None.
      """
      Loader.add_implicit_resolver(tag, regexp, first)
      Dumper.add_implicit_resolver(tag, regexp, first)
  
  def add_path_resolver(tag, path, kind=None, Loader=Loader, Dumper=Dumper):
      """
      Add a path based resolver for the given tag.
      A path is a list of keys that forms a path
      to a node in the representation tree.
      Keys can be string values, integers, or None.
      """
      Loader.add_path_resolver(tag, path, kind)
      Dumper.add_path_resolver(tag, path, kind)
  
  def add_constructor(tag, constructor, Loader=Loader):
      """
      Add a constructor for the given tag.
      Constructor is a function that accepts a Loader instance
      and a node object and produces the corresponding Python object.
      """
      Loader.add_constructor(tag, constructor)
  
  def add_multi_constructor(tag_prefix, multi_constructor, Loader=Loader):
      """
      Add a multi-constructor for the given tag prefix.
      Multi-constructor is called for a node if its tag starts with tag_prefix.
      Multi-constructor accepts a Loader instance, a tag suffix,
      and a node object and produces the corresponding Python object.
      """
      Loader.add_multi_constructor(tag_prefix, multi_constructor)
  
  def add_representer(data_type, representer, Dumper=Dumper):
      """
      Add a representer for the given type.
      Representer is a function accepting a Dumper instance
      and an instance of the given data type
      and producing the corresponding representation node.
      """
      Dumper.add_representer(data_type, representer)
  
  def add_multi_representer(data_type, multi_representer, Dumper=Dumper):
      """
      Add a representer for the given type.
      Multi-representer is a function accepting a Dumper instance
      and an instance of the given data type or subtype
      and producing the corresponding representation node.
      """
      Dumper.add_multi_representer(data_type, multi_representer)
  
  class YAMLObjectMetaclass(type):
      """
      The metaclass for YAMLObject.
      """
      def __init__(cls, name, bases, kwds):
          super(YAMLObjectMetaclass, cls).__init__(name, bases, kwds)
          if 'yaml_tag' in kwds and kwds['yaml_tag'] is not None:
              cls.yaml_loader.add_constructor(cls.yaml_tag, cls.from_yaml)
              cls.yaml_dumper.add_representer(cls, cls.to_yaml)
  
  class YAMLObject(object):
      """
      An object that can dump itself to a YAML stream
      and load itself from a YAML stream.
      """
  
      __metaclass__ = YAMLObjectMetaclass
      __slots__ = ()  # no direct instantiation, so allow immutable subclasses
  
      yaml_loader = Loader
      yaml_dumper = Dumper
  
      yaml_tag = None
      yaml_flow_style = None
  
      def from_yaml(cls, loader, node):
          """
          Convert a representation node to a Python object.
          """
          return loader.construct_yaml_object(node, cls)
      from_yaml = classmethod(from_yaml)
  
      def to_yaml(cls, dumper, data):
          """
          Convert a Python object to a representation node.
          """
          return dumper.represent_yaml_object(cls.yaml_tag, data, cls,
                  flow_style=cls.yaml_flow_style)
      to_yaml = classmethod(to_yaml)
  
  