diff --git a/yaml/__init__.py b/yaml/__init__.py index bd233a8..69c18c4 100644 --- a/yaml/__init__.py +++ b/yaml/__init__.py @@ -8,10 +8,13 @@ from nodes import * from loader import * from dumper import * +__version__ = '3.08' + try: from cyaml import * + __with_libyaml__ = True except ImportError: - pass + __with_libyaml__ = False def scan(stream, Loader=Loader): """ @@ -35,8 +38,7 @@ def compose(stream, Loader=Loader): and produce the corresponding representation tree. """ loader = Loader(stream) - if loader.check_node(): - return loader.get_node() + return loader.get_single_node() def compose_all(stream, Loader=Loader): """ @@ -47,6 +49,14 @@ def compose_all(stream, Loader=Loader): while loader.check_node(): yield loader.get_node() +def load(stream, Loader=Loader): + """ + Parse the first YAML document in a stream + and produce the corresponding Python object. + """ + loader = Loader(stream) + return loader.get_single_data() + def load_all(stream, Loader=Loader): """ Parse all YAML documents in a stream @@ -56,14 +66,13 @@ def load_all(stream, Loader=Loader): while loader.check_data(): yield loader.get_data() -def load(stream, Loader=Loader): +def safe_load(stream): """ Parse the first YAML document in a stream and produce the corresponding Python object. + Resolve only basic YAML tags. """ - loader = Loader(stream) - if loader.check_data(): - return loader.get_data() + return load(stream, SafeLoader) def safe_load_all(stream): """ @@ -73,14 +82,6 @@ def safe_load_all(stream): """ return load_all(stream, SafeLoader) -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 emit(events, stream=None, Dumper=Dumper, canonical=None, indent=None, width=None, allow_unicode=None, line_break=None): @@ -90,10 +91,7 @@ def emit(events, stream=None, Dumper=Dumper, """ getvalue = None if stream is None: - try: - from cStringIO import StringIO - except ImportError: - from StringIO import StringIO + from StringIO import StringIO stream = StringIO() getvalue = stream.getvalue dumper = Dumper(stream, canonical=canonical, indent=indent, width=width, @@ -114,10 +112,10 @@ def serialize_all(nodes, stream=None, Dumper=Dumper, """ getvalue = None if stream is None: - try: - from cStringIO import StringIO - except ImportError: + 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, @@ -150,10 +148,10 @@ def dump_all(documents, stream=None, Dumper=Dumper, """ getvalue = None if stream is None: - try: - from cStringIO import StringIO - except ImportError: + 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, diff --git a/yaml/composer.py b/yaml/composer.py index 9f5cd87..06e5ac7 100644 --- a/yaml/composer.py +++ b/yaml/composer.py @@ -26,6 +26,27 @@ class Composer(object): if not self.check_event(StreamEndEvent): return self.compose_document() + def get_single_node(self): + # Drop the STREAM-START event. + self.get_event() + + # Compose a document if the stream is not empty. + document = None + if not self.check_event(StreamEndEvent): + document = self.compose_document() + + # Ensure that the stream contains no more documents. + if not self.check_event(StreamEndEvent): + event = self.get_event() + raise ComposerError("expected a single document in the stream", + document.start_mark, "but found another document", + event.start_mark) + + # Drop the STREAM-END event. + self.get_event() + + return document + def compose_document(self): # Drop the DOCUMENT-START event. self.get_event() diff --git a/yaml/constructor.py b/yaml/constructor.py index a1295c8..420c434 100644 --- a/yaml/constructor.py +++ b/yaml/constructor.py @@ -37,6 +37,13 @@ class BaseConstructor(object): if self.check_node(): return self.construct_document(self.get_node()) + def get_single_data(self): + # Ensure that the stream contains a single document and construct it. + node = self.get_single_node() + if node is not None: + return self.construct_document(node) + return None + def construct_document(self, node): data = self.construct_object(node) while self.state_generators: @@ -61,7 +68,6 @@ class BaseConstructor(object): "found unconstructable recursive node", node.start_mark) self.recursive_objects[node] = None constructor = None - state_constructor = None tag_suffix = None if node.tag in self.yaml_constructors: constructor = self.yaml_constructors[node.tag] @@ -314,7 +320,10 @@ class SafeConstructor(BaseConstructor): second = int(values['second']) fraction = 0 if values['fraction']: - fraction = int(values['fraction'][:6].ljust(6, '0')) + fraction = values['fraction'][:6] + while len(fraction) < 6: + fraction += '0' + fraction = int(fraction) delta = None if values['tz_sign']: tz_hour = int(values['tz_hour']) diff --git a/yaml/cyaml.py b/yaml/cyaml.py index 14acb07..68dcd75 100644 --- a/yaml/cyaml.py +++ b/yaml/cyaml.py @@ -41,7 +41,7 @@ class CBaseDumper(CEmitter, BaseRepresenter, BaseResolver): encoding=None, explicit_start=None, explicit_end=None, version=None, tags=None): CEmitter.__init__(self, stream, canonical=canonical, - indent=indent, width=width, + indent=indent, width=width, encoding=encoding, allow_unicode=allow_unicode, line_break=line_break, explicit_start=explicit_start, explicit_end=explicit_end, version=version, tags=tags) @@ -58,7 +58,7 @@ class CSafeDumper(CEmitter, SafeRepresenter, Resolver): encoding=None, explicit_start=None, explicit_end=None, version=None, tags=None): CEmitter.__init__(self, stream, canonical=canonical, - indent=indent, width=width, + indent=indent, width=width, encoding=encoding, allow_unicode=allow_unicode, line_break=line_break, explicit_start=explicit_start, explicit_end=explicit_end, version=version, tags=tags) @@ -75,7 +75,7 @@ class CDumper(CEmitter, Serializer, Representer, Resolver): encoding=None, explicit_start=None, explicit_end=None, version=None, tags=None): CEmitter.__init__(self, stream, canonical=canonical, - indent=indent, width=width, + indent=indent, width=width, encoding=encoding, allow_unicode=allow_unicode, line_break=line_break, explicit_start=explicit_start, explicit_end=explicit_end, version=version, tags=tags) diff --git a/yaml/dumper.py b/yaml/dumper.py index 355c1e2..f811d2c 100644 --- a/yaml/dumper.py +++ b/yaml/dumper.py @@ -16,7 +16,7 @@ class BaseDumper(Emitter, Serializer, BaseRepresenter, BaseResolver): version=None, tags=None): Emitter.__init__(self, stream, canonical=canonical, indent=indent, width=width, - allow_uncode=allow_unicode, line_break=line_break) + allow_unicode=allow_unicode, line_break=line_break) Serializer.__init__(self, encoding=encoding, explicit_start=explicit_start, explicit_end=explicit_end, version=version, tags=tags) diff --git a/yaml/emitter.py b/yaml/emitter.py index d9d1bf8..0932942 100644 --- a/yaml/emitter.py +++ b/yaml/emitter.py @@ -11,8 +11,6 @@ __all__ = ['Emitter', 'EmitterError'] from error import YAMLError from events import * -import re - class EmitterError(YAMLError): pass @@ -78,6 +76,9 @@ class Emitter(object): self.whitespace = True self.indention = True + # Whether the document requires an explicit document indicator + self.open_ended = False + # Formatting details. self.canonical = canonical self.allow_unicode = allow_unicode @@ -153,7 +154,7 @@ class Emitter(object): def expect_stream_start(self): if isinstance(self.event, StreamStartEvent): - if self.event.encoding: + if self.event.encoding and not getattr(self.stream, 'encoding', None): self.encoding = self.event.encoding self.write_stream_start() self.state = self.expect_first_document_start @@ -171,6 +172,9 @@ class Emitter(object): def expect_document_start(self, first=False): if isinstance(self.event, DocumentStartEvent): + if (self.event.version or self.event.tags) and self.open_ended: + self.write_indicator(u'...', True) + self.write_indent() if self.event.version: version_text = self.prepare_version(self.event.version) self.write_version_directive(version_text) @@ -194,6 +198,9 @@ class Emitter(object): self.write_indent() self.state = self.expect_document_root elif isinstance(self.event, StreamEndEvent): + if self.open_ended: + self.write_indicator(u'...', True) + self.write_indent() self.write_stream_end() self.state = self.expect_nothing else: @@ -538,7 +545,7 @@ class Emitter(object): raise EmitterError("tag handle must start and end with '!': %r" % (handle.encode('utf-8'))) for ch in handle[1:-1]: - if not (u'0' <= ch <= u'9' or u'A' <= ch <= 'Z' or u'a' <= ch <= 'z' \ + if not (u'0' <= ch <= u'9' or u'A' <= ch <= u'Z' or u'a' <= ch <= u'z' \ or ch in u'-_'): raise EmitterError("invalid character %r in the tag handle: %r" % (ch.encode('utf-8'), handle.encode('utf-8'))) @@ -553,7 +560,7 @@ class Emitter(object): end = 1 while end < len(prefix): ch = prefix[end] - if u'0' <= ch <= u'9' or u'A' <= ch <= 'Z' or u'a' <= ch <= 'z' \ + if u'0' <= ch <= u'9' or u'A' <= ch <= u'Z' or u'a' <= ch <= u'z' \ or ch in u'-;/?!:@&=+$,_.~*\'()[]': end += 1 else: @@ -583,7 +590,7 @@ class Emitter(object): start = end = 0 while end < len(suffix): ch = suffix[end] - if u'0' <= ch <= u'9' or u'A' <= ch <= 'Z' or u'a' <= ch <= 'z' \ + if u'0' <= ch <= u'9' or u'A' <= ch <= u'Z' or u'a' <= ch <= u'z' \ or ch in u'-;/?:@&=+$,_.~*\'()[]' \ or (ch == u'!' and handle != u'!'): end += 1 @@ -606,7 +613,7 @@ class Emitter(object): if not anchor: raise EmitterError("anchor must not be empty") for ch in anchor: - if not (u'0' <= ch <= u'9' or u'A' <= ch <= 'Z' or u'a' <= ch <= 'z' \ + if not (u'0' <= ch <= u'9' or u'A' <= ch <= u'Z' or u'a' <= ch <= u'z' \ or ch in u'-_'): raise EmitterError("invalid character %r in the anchor: %r" % (ch.encode('utf-8'), anchor.encode('utf-8'))) @@ -627,15 +634,13 @@ class Emitter(object): line_breaks = False special_characters = False - # Whitespaces. - inline_spaces = False # non-space space+ non-space - inline_breaks = False # non-space break+ non-space - leading_spaces = False # ^ space+ (non-space | $) - leading_breaks = False # ^ break+ (non-space | $) - trailing_spaces = False # (^ | non-space) space+ $ - trailing_breaks = False # (^ | non-space) break+ $ - inline_breaks_spaces = False # non-space break+ space+ non-space - mixed_breaks_spaces = False # anything else + # Important whitespace combinations. + leading_space = False + leading_break = False + trailing_space = False + trailing_break = False + break_space = False + space_break = False # Check document indicators. if scalar.startswith(u'---') or scalar.startswith(u'...'): @@ -643,32 +648,23 @@ class Emitter(object): flow_indicators = True # First character or preceded by a whitespace. - preceeded_by_space = True + preceeded_by_whitespace = True # Last character or followed by a whitespace. - followed_by_space = (len(scalar) == 1 or + followed_by_whitespace = (len(scalar) == 1 or scalar[1] in u'\0 \t\r\n\x85\u2028\u2029') - # The current series of whitespaces contain plain spaces. - spaces = False + # The previous character is a space. + previous_space = False - # The current series of whitespaces contain line breaks. - breaks = False - - # The current series of whitespaces contain a space followed by a - # break. - mixed = False - - # The current series of whitespaces start at the beginning of the - # scalar. - leading = False + # The previous character is a break. + previous_break = False index = 0 while index < len(scalar): ch = scalar[index] # Check for indicators. - if index == 0: # Leading indicators are special characters. if ch in u'#,[]{}&*!|>\'\"%@`': @@ -676,9 +672,9 @@ class Emitter(object): block_indicators = True if ch in u'?:': flow_indicators = True - if followed_by_space: + if followed_by_whitespace: block_indicators = True - if ch == u'-' and followed_by_space: + if ch == u'-' and followed_by_whitespace: flow_indicators = True block_indicators = True else: @@ -687,14 +683,13 @@ class Emitter(object): flow_indicators = True if ch == u':': flow_indicators = True - if followed_by_space: + if followed_by_whitespace: block_indicators = True - if ch == u'#' and preceeded_by_space: + if ch == u'#' and preceeded_by_whitespace: flow_indicators = True block_indicators = True # Check for line breaks, special, and unicode characters. - if ch in u'\n\x85\u2028\u2029': line_breaks = True if not (ch == u'\n' or u'\x20' <= ch <= u'\x7E'): @@ -706,65 +701,33 @@ class Emitter(object): else: special_characters = True - # Spaces, line breaks, and how they are mixed. State machine. - - # Start or continue series of whitespaces. - if ch in u' \n\x85\u2028\u2029': - if spaces and breaks: - if ch != u' ': # break+ (space+ break+) => mixed - mixed = True - elif spaces: - if ch != u' ': # (space+ break+) => mixed - breaks = True - mixed = True - elif breaks: - if ch == u' ': # break+ space+ - spaces = True - else: - leading = (index == 0) - if ch == u' ': # space+ - spaces = True - else: # break+ - breaks = True - - # Series of whitespaces ended with a non-space. - elif spaces or breaks: - if leading: - if spaces and breaks: - mixed_breaks_spaces = True - elif spaces: - leading_spaces = True - elif breaks: - leading_breaks = True - else: - if mixed: - mixed_breaks_spaces = True - elif spaces and breaks: - inline_breaks_spaces = True - elif spaces: - inline_spaces = True - elif breaks: - inline_breaks = True - spaces = breaks = mixed = leading = False - - # Series of whitespaces reach the end. - if (spaces or breaks) and (index == len(scalar)-1): - if spaces and breaks: - mixed_breaks_spaces = True - elif spaces: - trailing_spaces = True - if leading: - leading_spaces = True - elif breaks: - trailing_breaks = True - if leading: - leading_breaks = True - spaces = breaks = mixed = leading = False + # Detect important whitespace combinations. + if ch == u' ': + if index == 0: + leading_space = True + if index == len(scalar)-1: + trailing_space = True + if previous_break: + break_space = True + previous_space = True + previous_break = False + elif ch in u'\n\x85\u2028\u2029': + if index == 0: + leading_break = True + if index == len(scalar)-1: + trailing_break = True + if previous_space: + space_break = True + previous_space = False + previous_break = True + else: + previous_space = False + previous_break = False # Prepare for the next character. index += 1 - preceeded_by_space = (ch in u'\0 \t\r\n\x85\u2028\u2029') - followed_by_space = (index+1 >= len(scalar) or + preceeded_by_whitespace = (ch in u'\0 \t\r\n\x85\u2028\u2029') + followed_by_whitespace = (index+1 >= len(scalar) or scalar[index+1] in u'\0 \t\r\n\x85\u2028\u2029') # Let's decide what styles are allowed. @@ -774,28 +737,28 @@ class Emitter(object): allow_double_quoted = True allow_block = True - # Leading and trailing whitespace are bad for plain scalars. We also - # do not want to mess with leading whitespaces for block scalars. - if leading_spaces or leading_breaks or trailing_spaces: - allow_flow_plain = allow_block_plain = allow_block = False - - # Trailing breaks are fine for block scalars, but unacceptable for - # plain scalars. - if trailing_breaks: + # Leading and trailing whitespaces are bad for plain scalars. + if (leading_space or leading_break + or trailing_space or trailing_break): allow_flow_plain = allow_block_plain = False - # The combination of (space+ break+) is only acceptable for block + # We do not permit trailing spaces for block scalars. + if trailing_space: + allow_block = False + + # Spaces at the beginning of a new line are only acceptable for block # scalars. - if inline_breaks_spaces: + if break_space: allow_flow_plain = allow_block_plain = allow_single_quoted = False - # Mixed spaces and breaks, as well as special character are only + # Spaces followed by breaks, as well as special character are only # allowed for double quoted scalars. - if mixed_breaks_spaces or special_characters: + if space_break or special_characters: allow_flow_plain = allow_block_plain = \ allow_single_quoted = allow_block = False - # We don't emit multiline plain scalars. + # Although the plain scalar writer supports breaks, we never emit + # multiline plain scalars. if line_breaks: allow_flow_plain = allow_block_plain = False @@ -838,6 +801,7 @@ class Emitter(object): self.whitespace = whitespace self.indention = self.indention and indention self.column += len(data) + self.open_ended = False if self.encoding: data = data.encode(self.encoding) self.stream.write(data) @@ -1008,25 +972,26 @@ class Emitter(object): end += 1 self.write_indicator(u'"', False) - def determine_chomp(self, text): - tail = text[-2:] - while len(tail) < 2: - tail = u' '+tail - if tail[-1] in u'\n\x85\u2028\u2029': - if tail[-2] in u'\n\x85\u2028\u2029': - return u'+' - else: - return u'' - else: - return u'-' + def determine_block_hints(self, text): + hints = u'' + if text: + if text[0] in u' \n\x85\u2028\u2029': + hints += unicode(self.best_indent) + if text[-1] not in u'\n\x85\u2028\u2029': + hints += u'-' + elif len(text) == 1 or text[-2] in u'\n\x85\u2028\u2029': + hints += u'+' + return hints def write_folded(self, text): - chomp = self.determine_chomp(text) - self.write_indicator(u'>'+chomp, True) - self.write_indent() - leading_space = False + hints = self.determine_block_hints(text) + self.write_indicator(u'>'+hints, True) + if hints[-1:] == u'+': + self.open_ended = True + self.write_line_break() + leading_space = True spaces = False - breaks = False + breaks = True start = end = 0 while end <= len(text): ch = None @@ -1072,10 +1037,12 @@ class Emitter(object): end += 1 def write_literal(self, text): - chomp = self.determine_chomp(text) - self.write_indicator(u'|'+chomp, True) - self.write_indent() - breaks = False + hints = self.determine_block_hints(text) + self.write_indicator(u'|'+hints, True) + if hints[-1:] == u'+': + self.open_ended = True + self.write_line_break() + breaks = True start = end = 0 while end <= len(text): ch = None @@ -1105,6 +1072,8 @@ class Emitter(object): end += 1 def write_plain(self, text, split=True): + if self.root_context: + self.open_ended = True if not text: return if not self.whitespace: @@ -1113,7 +1082,7 @@ class Emitter(object): if self.encoding: data = data.encode(self.encoding) self.stream.write(data) - self.writespace = False + self.whitespace = False self.indention = False spaces = False breaks = False @@ -1126,7 +1095,7 @@ class Emitter(object): if ch != u' ': if start+1 == end and self.column > self.best_width and split: self.write_indent() - self.writespace = False + self.whitespace = False self.indention = False else: data = text[start:end] diff --git a/yaml/parser.py b/yaml/parser.py index a46bb9e..b6a7416 100644 --- a/yaml/parser.py +++ b/yaml/parser.py @@ -72,8 +72,6 @@ class ParserError(MarkedYAMLError): class Parser(object): # Since writing a recursive-descendant parser is a straightforward task, we # do not give many comments here. - # Note that we use Python generators. If you rewrite the parser in another - # language, you may replace all 'yield'-s with event handler calls. DEFAULT_TAGS = { u'!': u'!', diff --git a/yaml/reader.py b/yaml/reader.py index 1d4667c..1e7a4db 100644 --- a/yaml/reader.py +++ b/yaml/reader.py @@ -74,7 +74,7 @@ class ReaderError(YAMLError): else: return "unacceptable character #x%04x: %s\n" \ " in \"%s\", position %d" \ - % (ord(self.character), self.reason, + % (self.character, self.reason, self.name, self.position) class Reader(object): @@ -175,7 +175,7 @@ class Reader(object): if match: character = match.group() position = self.index+(len(self.buffer)-self.pointer)+match.start() - raise ReaderError(self.name, position, character, + raise ReaderError(self.name, position, ord(character), 'unicode', "special characters are not allowed") def update(self, length): diff --git a/yaml/representer.py b/yaml/representer.py index 1f4fe59..f5606ec 100644 --- a/yaml/representer.py +++ b/yaml/representer.py @@ -286,6 +286,7 @@ SafeRepresenter.add_representer(set, SafeRepresenter.add_representer(datetime.date, SafeRepresenter.represent_date) + SafeRepresenter.add_representer(datetime.datetime, SafeRepresenter.represent_datetime) diff --git a/yaml/resolver.py b/yaml/resolver.py index 5cbf6b3..6b5ab87 100644 --- a/yaml/resolver.py +++ b/yaml/resolver.py @@ -173,7 +173,8 @@ Resolver.add_implicit_resolver( Resolver.add_implicit_resolver( u'tag:yaml.org,2002:float', - re.compile(ur'''^(?:[-+]?(?:[0-9][0-9_]*)?\.[0-9_]*(?:[eE][-+][0-9]+)? + re.compile(ur'''^(?:[-+]?(?:[0-9][0-9_]*)\.[0-9_]*(?:[eE][-+][0-9]+)? + |\.[0-9_]+(?:[eE][-+][0-9]+)? |[-+]?[0-9][0-9_]*(?::[0-5]?[0-9])+\.[0-9_]* |[-+]?\.(?:inf|Inf|INF) |\.(?:nan|NaN|NAN))$''', re.X), @@ -191,7 +192,7 @@ Resolver.add_implicit_resolver( Resolver.add_implicit_resolver( u'tag:yaml.org,2002:merge', re.compile(ur'^(?:<<)$'), - ['<']) + [u'<']) Resolver.add_implicit_resolver( u'tag:yaml.org,2002:null', @@ -212,7 +213,7 @@ Resolver.add_implicit_resolver( Resolver.add_implicit_resolver( u'tag:yaml.org,2002:value', re.compile(ur'^(?:=)$'), - ['=']) + [u'=']) # The following resolver is only for documentation purposes. It cannot work # because plain scalars cannot start with '!', '&', or '*'. diff --git a/yaml/scanner.py b/yaml/scanner.py index a3ecdd0..8bccdc3 100644 --- a/yaml/scanner.py +++ b/yaml/scanner.py @@ -807,7 +807,7 @@ class Scanner(object): # See the specification for details. length = 0 ch = self.peek(length) - while u'0' <= ch <= u'9' or u'A' <= ch <= 'Z' or u'a' <= ch <= 'z' \ + while u'0' <= ch <= u'9' or u'A' <= ch <= u'Z' or u'a' <= ch <= u'z' \ or ch in u'-_': length += 1 ch = self.peek(length) @@ -846,7 +846,7 @@ class Scanner(object): def scan_yaml_directive_number(self, start_mark): # See the specification for details. ch = self.peek() - if not (u'0' <= ch <= '9'): + if not (u'0' <= ch <= u'9'): raise ScannerError("while scanning a directive", start_mark, "expected a digit, but found %r" % ch.encode('utf-8'), self.get_mark()) @@ -912,14 +912,14 @@ class Scanner(object): # Therefore we restrict aliases to numbers and ASCII letters. start_mark = self.get_mark() indicator = self.peek() - if indicator == '*': + if indicator == u'*': name = 'alias' else: name = 'anchor' self.forward() length = 0 ch = self.peek(length) - while u'0' <= ch <= u'9' or u'A' <= ch <= 'Z' or u'a' <= ch <= 'z' \ + while u'0' <= ch <= u'9' or u'A' <= ch <= u'Z' or u'a' <= ch <= u'z' \ or ch in u'-_': length += 1 ch = self.peek(length) @@ -1368,7 +1368,7 @@ class Scanner(object): length = 1 ch = self.peek(length) if ch != u' ': - while u'0' <= ch <= u'9' or u'A' <= ch <= 'Z' or u'a' <= ch <= 'z' \ + while u'0' <= ch <= u'9' or u'A' <= ch <= u'Z' or u'a' <= ch <= u'z' \ or ch in u'-_': length += 1 ch = self.peek(length) @@ -1388,7 +1388,7 @@ class Scanner(object): chunks = [] length = 0 ch = self.peek(length) - while u'0' <= ch <= u'9' or u'A' <= ch <= 'Z' or u'a' <= ch <= 'z' \ + while u'0' <= ch <= u'9' or u'A' <= ch <= u'Z' or u'a' <= ch <= u'z' \ or ch in u'-;/?:@&=+$,_.!~*\'()[]%': if ch == u'%': chunks.append(self.prefix(length)) diff --git a/yaml/serializer.py b/yaml/serializer.py index 2101f95..0bf1e96 100644 --- a/yaml/serializer.py +++ b/yaml/serializer.py @@ -55,7 +55,7 @@ class Serializer(object): self.emit(DocumentEndEvent(explicit=self.use_explicit_end)) self.serialized_nodes = {} self.anchors = {} - self.last_alias_id = 0 + self.last_anchor_id = 0 def anchor_node(self, node): if node in self.anchors: