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+\section{\module{xml.parsers.expat} ---
+         Fast XML parsing using Expat}
+
+% Markup notes:
+%
+% Many of the attributes of the XMLParser objects are callbacks.
+% Since signature information must be presented, these are described
+% using the methoddesc environment.  Since they are attributes which
+% are set by client code, in-text references to these attributes
+% should be marked using the \member macro and should not include the
+% parentheses used when marking functions and methods.
+
+\declaremodule{standard}{xml.parsers.expat}
+\modulesynopsis{An interface to the Expat non-validating XML parser.}
+\moduleauthor{Paul Prescod}{paul@prescod.net}
+
+\versionadded{2.0}
+
+The \module{xml.parsers.expat} module is a Python interface to the
+Expat\index{Expat} non-validating XML parser.
+The module provides a single extension type, \class{xmlparser}, that
+represents the current state of an XML parser.  After an
+\class{xmlparser} object has been created, various attributes of the object 
+can be set to handler functions.  When an XML document is then fed to
+the parser, the handler functions are called for the character data
+and markup in the XML document.
+
+This module uses the \module{pyexpat}\refbimodindex{pyexpat} module to
+provide access to the Expat parser.  Direct use of the
+\module{pyexpat} module is deprecated.
+
+This module provides one exception and one type object:
+
+\begin{excdesc}{ExpatError}
+  The exception raised when Expat reports an error.  See section
+  \ref{expaterror-objects}, ``ExpatError Exceptions,'' for more
+  information on interpreting Expat errors.
+\end{excdesc}
+
+\begin{excdesc}{error}
+  Alias for \exception{ExpatError}.
+\end{excdesc}
+
+\begin{datadesc}{XMLParserType}
+  The type of the return values from the \function{ParserCreate()}
+  function.
+\end{datadesc}
+
+
+The \module{xml.parsers.expat} module contains two functions:
+
+\begin{funcdesc}{ErrorString}{errno}
+Returns an explanatory string for a given error number \var{errno}.
+\end{funcdesc}
+
+\begin{funcdesc}{ParserCreate}{\optional{encoding\optional{,
+                               namespace_separator}}}
+Creates and returns a new \class{xmlparser} object.  
+\var{encoding}, if specified, must be a string naming the encoding 
+used by the XML data.  Expat doesn't support as many encodings as
+Python does, and its repertoire of encodings can't be extended; it
+supports UTF-8, UTF-16, ISO-8859-1 (Latin1), and ASCII.  If
+\var{encoding} is given it will override the implicit or explicit
+encoding of the document.
+
+Expat can optionally do XML namespace processing for you, enabled by
+providing a value for \var{namespace_separator}.  The value must be a
+one-character string; a \exception{ValueError} will be raised if the
+string has an illegal length (\code{None} is considered the same as
+omission).  When namespace processing is enabled, element type names
+and attribute names that belong to a namespace will be expanded.  The
+element name passed to the element handlers
+\member{StartElementHandler} and \member{EndElementHandler}
+will be the concatenation of the namespace URI, the namespace
+separator character, and the local part of the name.  If the namespace
+separator is a zero byte (\code{chr(0)}) then the namespace URI and
+the local part will be concatenated without any separator.
+
+For example, if \var{namespace_separator} is set to a space character
+(\character{ }) and the following document is parsed:
+
+\begin{verbatim}
+<?xml version="1.0"?>
+<root xmlns    = "http://default-namespace.org/"
+      xmlns:py = "http://www.python.org/ns/">
+  <py:elem1 />
+  <elem2 xmlns="" />
+</root>
+\end{verbatim}
+
+\member{StartElementHandler} will receive the following strings
+for each element:
+
+\begin{verbatim}
+http://default-namespace.org/ root
+http://www.python.org/ns/ elem1
+elem2
+\end{verbatim}
+\end{funcdesc}
+
+
+\begin{seealso}
+  \seetitle[http://www.libexpat.org/]{The Expat XML Parser}
+           {Home page of the Expat project.}
+\end{seealso}
+
+
+\subsection{XMLParser Objects \label{xmlparser-objects}}
+
+\class{xmlparser} objects have the following methods:
+
+\begin{methoddesc}[xmlparser]{Parse}{data\optional{, isfinal}}
+Parses the contents of the string \var{data}, calling the appropriate
+handler functions to process the parsed data.  \var{isfinal} must be
+true on the final call to this method.  \var{data} can be the empty
+string at any time.
+\end{methoddesc}
+
+\begin{methoddesc}[xmlparser]{ParseFile}{file}
+Parse XML data reading from the object \var{file}.  \var{file} only
+needs to provide the \method{read(\var{nbytes})} method, returning the
+empty string when there's no more data.
+\end{methoddesc}
+
+\begin{methoddesc}[xmlparser]{SetBase}{base}
+Sets the base to be used for resolving relative URIs in system
+identifiers in declarations.  Resolving relative identifiers is left
+to the application: this value will be passed through as the
+\var{base} argument to the \function{ExternalEntityRefHandler},
+\function{NotationDeclHandler}, and
+\function{UnparsedEntityDeclHandler} functions.
+\end{methoddesc}
+
+\begin{methoddesc}[xmlparser]{GetBase}{}
+Returns a string containing the base set by a previous call to
+\method{SetBase()}, or \code{None} if 
+\method{SetBase()} hasn't been called.
+\end{methoddesc}
+
+\begin{methoddesc}[xmlparser]{GetInputContext}{}
+Returns the input data that generated the current event as a string.
+The data is in the encoding of the entity which contains the text.
+When called while an event handler is not active, the return value is
+\code{None}.
+\versionadded{2.1}
+\end{methoddesc}
+
+\begin{methoddesc}[xmlparser]{ExternalEntityParserCreate}{context\optional{,
+                                                          encoding}}
+Create a ``child'' parser which can be used to parse an external
+parsed entity referred to by content parsed by the parent parser.  The
+\var{context} parameter should be the string passed to the
+\method{ExternalEntityRefHandler()} handler function, described below.
+The child parser is created with the \member{ordered_attributes},
+\member{returns_unicode} and \member{specified_attributes} set to the
+values of this parser.
+\end{methoddesc}
+
+\begin{methoddesc}[xmlparser]{UseForeignDTD}{\optional{flag}}
+Calling this with a true value for \var{flag} (the default) will cause
+Expat to call the \member{ExternalEntityRefHandler} with
+\constant{None} for all arguments to allow an alternate DTD to be
+loaded.  If the document does not contain a document type declaration,
+the \member{ExternalEntityRefHandler} will still be called, but the
+\member{StartDoctypeDeclHandler} and \member{EndDoctypeDeclHandler}
+will not be called.
+
+Passing a false value for \var{flag} will cancel a previous call that
+passed a true value, but otherwise has no effect.
+
+This method can only be called before the \method{Parse()} or
+\method{ParseFile()} methods are called; calling it after either of
+those have been called causes \exception{ExpatError} to be raised with
+the \member{code} attribute set to
+\constant{errors.XML_ERROR_CANT_CHANGE_FEATURE_ONCE_PARSING}.
+
+\versionadded{2.3}
+\end{methoddesc}
+
+
+\class{xmlparser} objects have the following attributes:
+
+\begin{memberdesc}[xmlparser]{buffer_size}
+The size of the buffer used when \member{buffer_text} is true.  This
+value cannot be changed at this time.
+\versionadded{2.3}
+\end{memberdesc}
+
+\begin{memberdesc}[xmlparser]{buffer_text}
+Setting this to true causes the \class{xmlparser} object to buffer
+textual content returned by Expat to avoid multiple calls to the
+\method{CharacterDataHandler()} callback whenever possible.  This can
+improve performance substantially since Expat normally breaks
+character data into chunks at every line ending.  This attribute is
+false by default, and may be changed at any time.
+\versionadded{2.3}
+\end{memberdesc}
+
+\begin{memberdesc}[xmlparser]{buffer_used}
+If \member{buffer_text} is enabled, the number of bytes stored in the
+buffer.  These bytes represent UTF-8 encoded text.  This attribute has
+no meaningful interpretation when \member{buffer_text} is false.
+\versionadded{2.3}
+\end{memberdesc}
+
+\begin{memberdesc}[xmlparser]{ordered_attributes}
+Setting this attribute to a non-zero integer causes the attributes to
+be reported as a list rather than a dictionary.  The attributes are
+presented in the order found in the document text.  For each
+attribute, two list entries are presented: the attribute name and the
+attribute value.  (Older versions of this module also used this
+format.)  By default, this attribute is false; it may be changed at
+any time.
+\versionadded{2.1}
+\end{memberdesc}
+
+\begin{memberdesc}[xmlparser]{returns_unicode} 
+If this attribute is set to a non-zero integer, the handler functions
+will be passed Unicode strings.  If \member{returns_unicode} is
+\constant{False}, 8-bit strings containing UTF-8 encoded data will be
+passed to the handlers.  This is \constant{True} by default when
+Python is built with Unicode support.
+\versionchanged[Can be changed at any time to affect the result
+  type]{1.6}
+\end{memberdesc}
+
+\begin{memberdesc}[xmlparser]{specified_attributes}
+If set to a non-zero integer, the parser will report only those
+attributes which were specified in the document instance and not those
+which were derived from attribute declarations.  Applications which
+set this need to be especially careful to use what additional
+information is available from the declarations as needed to comply
+with the standards for the behavior of XML processors.  By default,
+this attribute is false; it may be changed at any time.
+\versionadded{2.1}
+\end{memberdesc}
+
+The following attributes contain values relating to the most recent
+error encountered by an \class{xmlparser} object, and will only have
+correct values once a call to \method{Parse()} or \method{ParseFile()}
+has raised a \exception{xml.parsers.expat.ExpatError} exception.
+
+\begin{memberdesc}[xmlparser]{ErrorByteIndex} 
+Byte index at which an error occurred.
+\end{memberdesc} 
+
+\begin{memberdesc}[xmlparser]{ErrorCode} 
+Numeric code specifying the problem.  This value can be passed to the
+\function{ErrorString()} function, or compared to one of the constants
+defined in the \code{errors} object.
+\end{memberdesc}
+
+\begin{memberdesc}[xmlparser]{ErrorColumnNumber} 
+Column number at which an error occurred.
+\end{memberdesc}
+
+\begin{memberdesc}[xmlparser]{ErrorLineNumber}
+Line number at which an error occurred.
+\end{memberdesc}
+
+The following attributes contain values relating to the current parse
+location in an \class{xmlparser} object.  During a callback reporting
+a parse event they indicate the location of the first of the sequence
+of characters that generated the event.  When called outside of a
+callback, the position indicated will be just past the last parse
+event (regardless of whether there was an associated callback).
+\versionadded{2.4}
+
+\begin{memberdesc}[xmlparser]{CurrentByteIndex} 
+Current byte index in the parser input.
+\end{memberdesc} 
+
+\begin{memberdesc}[xmlparser]{CurrentColumnNumber} 
+Current column number in the parser input.
+\end{memberdesc}
+
+\begin{memberdesc}[xmlparser]{CurrentLineNumber}
+Current line number in the parser input.
+\end{memberdesc}
+
+Here is the list of handlers that can be set.  To set a handler on an
+\class{xmlparser} object \var{o}, use
+\code{\var{o}.\var{handlername} = \var{func}}.  \var{handlername} must
+be taken from the following list, and \var{func} must be a callable
+object accepting the correct number of arguments.  The arguments are
+all strings, unless otherwise stated.
+
+\begin{methoddesc}[xmlparser]{XmlDeclHandler}{version, encoding, standalone}
+Called when the XML declaration is parsed.  The XML declaration is the
+(optional) declaration of the applicable version of the XML
+recommendation, the encoding of the document text, and an optional
+``standalone'' declaration.  \var{version} and \var{encoding} will be
+strings of the type dictated by the \member{returns_unicode}
+attribute, and \var{standalone} will be \code{1} if the document is
+declared standalone, \code{0} if it is declared not to be standalone,
+or \code{-1} if the standalone clause was omitted.
+This is only available with Expat version 1.95.0 or newer.
+\versionadded{2.1}
+\end{methoddesc}
+
+\begin{methoddesc}[xmlparser]{StartDoctypeDeclHandler}{doctypeName,
+                                                       systemId, publicId,
+                                                       has_internal_subset}
+Called when Expat begins parsing the document type declaration
+(\code{<!DOCTYPE \ldots}).  The \var{doctypeName} is provided exactly
+as presented.  The \var{systemId} and \var{publicId} parameters give
+the system and public identifiers if specified, or \code{None} if
+omitted.  \var{has_internal_subset} will be true if the document
+contains and internal document declaration subset.
+This requires Expat version 1.2 or newer.
+\end{methoddesc}
+
+\begin{methoddesc}[xmlparser]{EndDoctypeDeclHandler}{}
+Called when Expat is done parsing the document type declaration.
+This requires Expat version 1.2 or newer.
+\end{methoddesc}
+
+\begin{methoddesc}[xmlparser]{ElementDeclHandler}{name, model}
+Called once for each element type declaration.  \var{name} is the name
+of the element type, and \var{model} is a representation of the
+content model.
+\end{methoddesc}
+
+\begin{methoddesc}[xmlparser]{AttlistDeclHandler}{elname, attname,
+                                                  type, default, required}
+Called for each declared attribute for an element type.  If an
+attribute list declaration declares three attributes, this handler is
+called three times, once for each attribute.  \var{elname} is the name
+of the element to which the declaration applies and \var{attname} is
+the name of the attribute declared.  The attribute type is a string
+passed as \var{type}; the possible values are \code{'CDATA'},
+\code{'ID'}, \code{'IDREF'}, ...
+\var{default} gives the default value for the attribute used when the
+attribute is not specified by the document instance, or \code{None} if
+there is no default value (\code{\#IMPLIED} values).  If the attribute
+is required to be given in the document instance, \var{required} will
+be true.
+This requires Expat version 1.95.0 or newer.
+\end{methoddesc}
+
+\begin{methoddesc}[xmlparser]{StartElementHandler}{name, attributes}
+Called for the start of every element.  \var{name} is a string
+containing the element name, and \var{attributes} is a dictionary
+mapping attribute names to their values.
+\end{methoddesc}
+
+\begin{methoddesc}[xmlparser]{EndElementHandler}{name}
+Called for the end of every element.
+\end{methoddesc}
+
+\begin{methoddesc}[xmlparser]{ProcessingInstructionHandler}{target, data}
+Called for every processing instruction.
+\end{methoddesc}
+
+\begin{methoddesc}[xmlparser]{CharacterDataHandler}{data}
+Called for character data.  This will be called for normal character
+data, CDATA marked content, and ignorable whitespace.  Applications
+which must distinguish these cases can use the
+\member{StartCdataSectionHandler}, \member{EndCdataSectionHandler},
+and \member{ElementDeclHandler} callbacks to collect the required
+information.
+\end{methoddesc}
+
+\begin{methoddesc}[xmlparser]{UnparsedEntityDeclHandler}{entityName, base,
+                                                         systemId, publicId,
+                                                         notationName}
+Called for unparsed (NDATA) entity declarations.  This is only present
+for version 1.2 of the Expat library; for more recent versions, use
+\member{EntityDeclHandler} instead.  (The underlying function in the
+Expat library has been declared obsolete.)
+\end{methoddesc}
+
+\begin{methoddesc}[xmlparser]{EntityDeclHandler}{entityName,
+                                                 is_parameter_entity, value,
+                                                 base, systemId,
+                                                 publicId,
+                                                 notationName}
+Called for all entity declarations.  For parameter and internal
+entities, \var{value} will be a string giving the declared contents
+of the entity; this will be \code{None} for external entities.  The
+\var{notationName} parameter will be \code{None} for parsed entities,
+and the name of the notation for unparsed entities.
+\var{is_parameter_entity} will be true if the entity is a parameter
+entity or false for general entities (most applications only need to
+be concerned with general entities).
+This is only available starting with version 1.95.0 of the Expat
+library.
+\versionadded{2.1}
+\end{methoddesc}
+
+\begin{methoddesc}[xmlparser]{NotationDeclHandler}{notationName, base,
+                                                   systemId, publicId}
+Called for notation declarations.  \var{notationName}, \var{base}, and
+\var{systemId}, and \var{publicId} are strings if given.  If the
+public identifier is omitted, \var{publicId} will be \code{None}.
+\end{methoddesc}
+
+\begin{methoddesc}[xmlparser]{StartNamespaceDeclHandler}{prefix, uri}
+Called when an element contains a namespace declaration.  Namespace
+declarations are processed before the \member{StartElementHandler} is
+called for the element on which declarations are placed.
+\end{methoddesc}
+
+\begin{methoddesc}[xmlparser]{EndNamespaceDeclHandler}{prefix}
+Called when the closing tag is reached for an element 
+that contained a namespace declaration.  This is called once for each
+namespace declaration on the element in the reverse of the order for
+which the \member{StartNamespaceDeclHandler} was called to indicate
+the start of each namespace declaration's scope.  Calls to this
+handler are made after the corresponding \member{EndElementHandler}
+for the end of the element.
+\end{methoddesc}
+
+\begin{methoddesc}[xmlparser]{CommentHandler}{data}
+Called for comments.  \var{data} is the text of the comment, excluding
+the leading `\code{<!-}\code{-}' and trailing `\code{-}\code{->}'.
+\end{methoddesc}
+
+\begin{methoddesc}[xmlparser]{StartCdataSectionHandler}{}
+Called at the start of a CDATA section.  This and
+\member{EndCdataSectionHandler} are needed to be able to identify
+the syntactical start and end for CDATA sections.
+\end{methoddesc}
+
+\begin{methoddesc}[xmlparser]{EndCdataSectionHandler}{}
+Called at the end of a CDATA section.
+\end{methoddesc}
+
+\begin{methoddesc}[xmlparser]{DefaultHandler}{data}
+Called for any characters in the XML document for
+which no applicable handler has been specified.  This means
+characters that are part of a construct which could be reported, but
+for which no handler has been supplied. 
+\end{methoddesc}
+
+\begin{methoddesc}[xmlparser]{DefaultHandlerExpand}{data}
+This is the same as the \function{DefaultHandler}, 
+but doesn't inhibit expansion of internal entities.
+The entity reference will not be passed to the default handler.
+\end{methoddesc}
+
+\begin{methoddesc}[xmlparser]{NotStandaloneHandler}{} Called if the
+XML document hasn't been declared as being a standalone document.
+This happens when there is an external subset or a reference to a
+parameter entity, but the XML declaration does not set standalone to
+\code{yes} in an XML declaration.  If this handler returns \code{0},
+then the parser will throw an \constant{XML_ERROR_NOT_STANDALONE}
+error.  If this handler is not set, no exception is raised by the
+parser for this condition.
+\end{methoddesc}
+
+\begin{methoddesc}[xmlparser]{ExternalEntityRefHandler}{context, base,
+                                                        systemId, publicId}
+Called for references to external entities.  \var{base} is the current
+base, as set by a previous call to \method{SetBase()}.  The public and
+system identifiers, \var{systemId} and \var{publicId}, are strings if
+given; if the public identifier is not given, \var{publicId} will be
+\code{None}.  The \var{context} value is opaque and should only be
+used as described below.
+
+For external entities to be parsed, this handler must be implemented.
+It is responsible for creating the sub-parser using
+\code{ExternalEntityParserCreate(\var{context})}, initializing it with
+the appropriate callbacks, and parsing the entity.  This handler
+should return an integer; if it returns \code{0}, the parser will
+throw an \constant{XML_ERROR_EXTERNAL_ENTITY_HANDLING} error,
+otherwise parsing will continue.
+
+If this handler is not provided, external entities are reported by the
+\member{DefaultHandler} callback, if provided.
+\end{methoddesc}
+
+
+\subsection{ExpatError Exceptions \label{expaterror-objects}}
+\sectionauthor{Fred L. Drake, Jr.}{fdrake@acm.org}
+
+\exception{ExpatError} exceptions have a number of interesting
+attributes:
+
+\begin{memberdesc}[ExpatError]{code}
+  Expat's internal error number for the specific error.  This will
+  match one of the constants defined in the \code{errors} object from
+  this module.
+  \versionadded{2.1}
+\end{memberdesc}
+
+\begin{memberdesc}[ExpatError]{lineno}
+  Line number on which the error was detected.  The first line is
+  numbered \code{1}.
+  \versionadded{2.1}
+\end{memberdesc}
+
+\begin{memberdesc}[ExpatError]{offset}
+  Character offset into the line where the error occurred.  The first
+  column is numbered \code{0}.
+  \versionadded{2.1}
+\end{memberdesc}
+
+
+\subsection{Example \label{expat-example}}
+
+The following program defines three handlers that just print out their
+arguments.
+
+\begin{verbatim}
+import xml.parsers.expat
+
+# 3 handler functions
+def start_element(name, attrs):
+    print 'Start element:', name, attrs
+def end_element(name):
+    print 'End element:', name
+def char_data(data):
+    print 'Character data:', repr(data)
+
+p = xml.parsers.expat.ParserCreate()
+
+p.StartElementHandler = start_element
+p.EndElementHandler = end_element
+p.CharacterDataHandler = char_data
+
+p.Parse("""<?xml version="1.0"?>
+<parent id="top"><child1 name="paul">Text goes here</child1>
+<child2 name="fred">More text</child2>
+</parent>""", 1)
+\end{verbatim}
+
+The output from this program is:
+
+\begin{verbatim}
+Start element: parent {'id': 'top'}
+Start element: child1 {'name': 'paul'}
+Character data: 'Text goes here'
+End element: child1
+Character data: '\n'
+Start element: child2 {'name': 'fred'}
+Character data: 'More text'
+End element: child2
+Character data: '\n'
+End element: parent
+\end{verbatim}
+
+
+\subsection{Content Model Descriptions \label{expat-content-models}}
+\sectionauthor{Fred L. Drake, Jr.}{fdrake@acm.org}
+
+Content modules are described using nested tuples.  Each tuple
+contains four values: the type, the quantifier, the name, and a tuple
+of children.  Children are simply additional content module
+descriptions.
+
+The values of the first two fields are constants defined in the
+\code{model} object of the \module{xml.parsers.expat} module.  These
+constants can be collected in two groups: the model type group and the
+quantifier group.
+
+The constants in the model type group are:
+
+\begin{datadescni}{XML_CTYPE_ANY}
+The element named by the model name was declared to have a content
+model of \code{ANY}.
+\end{datadescni}
+
+\begin{datadescni}{XML_CTYPE_CHOICE}
+The named element allows a choice from a number of options; this is
+used for content models such as \code{(A | B | C)}.
+\end{datadescni}
+
+\begin{datadescni}{XML_CTYPE_EMPTY}
+Elements which are declared to be \code{EMPTY} have this model type.
+\end{datadescni}
+
+\begin{datadescni}{XML_CTYPE_MIXED}
+\end{datadescni}
+
+\begin{datadescni}{XML_CTYPE_NAME}
+\end{datadescni}
+
+\begin{datadescni}{XML_CTYPE_SEQ}
+Models which represent a series of models which follow one after the
+other are indicated with this model type.  This is used for models
+such as \code{(A, B, C)}.
+\end{datadescni}
+
+
+The constants in the quantifier group are:
+
+\begin{datadescni}{XML_CQUANT_NONE}
+No modifier is given, so it can appear exactly once, as for \code{A}.
+\end{datadescni}
+
+\begin{datadescni}{XML_CQUANT_OPT}
+The model is optional: it can appear once or not at all, as for
+\code{A?}.
+\end{datadescni}
+
+\begin{datadescni}{XML_CQUANT_PLUS}
+The model must occur one or more times (like \code{A+}).
+\end{datadescni}
+
+\begin{datadescni}{XML_CQUANT_REP}
+The model must occur zero or more times, as for \code{A*}.
+\end{datadescni}
+
+
+\subsection{Expat error constants \label{expat-errors}}
+
+The following constants are provided in the \code{errors} object of
+the \refmodule{xml.parsers.expat} module.  These constants are useful
+in interpreting some of the attributes of the \exception{ExpatError}
+exception objects raised when an error has occurred.
+
+The \code{errors} object has the following attributes:
+
+\begin{datadescni}{XML_ERROR_ASYNC_ENTITY}
+\end{datadescni}
+
+\begin{datadescni}{XML_ERROR_ATTRIBUTE_EXTERNAL_ENTITY_REF}
+An entity reference in an attribute value referred to an external
+entity instead of an internal entity.
+\end{datadescni}
+
+\begin{datadescni}{XML_ERROR_BAD_CHAR_REF}
+A character reference referred to a character which is illegal in XML
+(for example, character \code{0}, or `\code{\&\#0;}').
+\end{datadescni}
+
+\begin{datadescni}{XML_ERROR_BINARY_ENTITY_REF}
+An entity reference referred to an entity which was declared with a
+notation, so cannot be parsed.
+\end{datadescni}
+
+\begin{datadescni}{XML_ERROR_DUPLICATE_ATTRIBUTE}
+An attribute was used more than once in a start tag.
+\end{datadescni}
+
+\begin{datadescni}{XML_ERROR_INCORRECT_ENCODING}
+\end{datadescni}
+
+\begin{datadescni}{XML_ERROR_INVALID_TOKEN}
+Raised when an input byte could not properly be assigned to a
+character; for example, a NUL byte (value \code{0}) in a UTF-8 input
+stream.
+\end{datadescni}
+
+\begin{datadescni}{XML_ERROR_JUNK_AFTER_DOC_ELEMENT}
+Something other than whitespace occurred after the document element.
+\end{datadescni}
+
+\begin{datadescni}{XML_ERROR_MISPLACED_XML_PI}
+An XML declaration was found somewhere other than the start of the
+input data.
+\end{datadescni}
+
+\begin{datadescni}{XML_ERROR_NO_ELEMENTS}
+The document contains no elements (XML requires all documents to
+contain exactly one top-level element)..
+\end{datadescni}
+
+\begin{datadescni}{XML_ERROR_NO_MEMORY}
+Expat was not able to allocate memory internally.
+\end{datadescni}
+
+\begin{datadescni}{XML_ERROR_PARAM_ENTITY_REF}
+A parameter entity reference was found where it was not allowed.
+\end{datadescni}
+
+\begin{datadescni}{XML_ERROR_PARTIAL_CHAR}
+An incomplete character was found in the input.
+\end{datadescni}
+
+\begin{datadescni}{XML_ERROR_RECURSIVE_ENTITY_REF}
+An entity reference contained another reference to the same entity;
+possibly via a different name, and possibly indirectly.
+\end{datadescni}
+
+\begin{datadescni}{XML_ERROR_SYNTAX}
+Some unspecified syntax error was encountered.
+\end{datadescni}
+
+\begin{datadescni}{XML_ERROR_TAG_MISMATCH}
+An end tag did not match the innermost open start tag.
+\end{datadescni}
+
+\begin{datadescni}{XML_ERROR_UNCLOSED_TOKEN}
+Some token (such as a start tag) was not closed before the end of the
+stream or the next token was encountered.
+\end{datadescni}
+
+\begin{datadescni}{XML_ERROR_UNDEFINED_ENTITY}
+A reference was made to a entity which was not defined.
+\end{datadescni}
+
+\begin{datadescni}{XML_ERROR_UNKNOWN_ENCODING}
+The document encoding is not supported by Expat.
+\end{datadescni}
+
+\begin{datadescni}{XML_ERROR_UNCLOSED_CDATA_SECTION}
+A CDATA marked section was not closed.
+\end{datadescni}
+
+\begin{datadescni}{XML_ERROR_EXTERNAL_ENTITY_HANDLING}
+\end{datadescni}
+
+\begin{datadescni}{XML_ERROR_NOT_STANDALONE}
+The parser determined that the document was not ``standalone'' though
+it declared itself to be in the XML declaration, and the
+\member{NotStandaloneHandler} was set and returned \code{0}.
+\end{datadescni}
+
+\begin{datadescni}{XML_ERROR_UNEXPECTED_STATE}
+\end{datadescni}
+
+\begin{datadescni}{XML_ERROR_ENTITY_DECLARED_IN_PE}
+\end{datadescni}
+
+\begin{datadescni}{XML_ERROR_FEATURE_REQUIRES_XML_DTD}
+An operation was requested that requires DTD support to be compiled
+in, but Expat was configured without DTD support.  This should never
+be reported by a standard build of the \module{xml.parsers.expat}
+module.
+\end{datadescni}
+
+\begin{datadescni}{XML_ERROR_CANT_CHANGE_FEATURE_ONCE_PARSING}
+A behavioral change was requested after parsing started that can only
+be changed before parsing has started.  This is (currently) only
+raised by \method{UseForeignDTD()}.
+\end{datadescni}
+
+\begin{datadescni}{XML_ERROR_UNBOUND_PREFIX}
+An undeclared prefix was found when namespace processing was enabled.
+\end{datadescni}
+
+\begin{datadescni}{XML_ERROR_UNDECLARING_PREFIX}
+The document attempted to remove the namespace declaration associated
+with a prefix.
+\end{datadescni}
+
+\begin{datadescni}{XML_ERROR_INCOMPLETE_PE}
+A parameter entity contained incomplete markup.
+\end{datadescni}
+
+\begin{datadescni}{XML_ERROR_XML_DECL}
+The document contained no document element at all.
+\end{datadescni}
+
+\begin{datadescni}{XML_ERROR_TEXT_DECL}
+There was an error parsing a text declaration in an external entity.
+\end{datadescni}
+
+\begin{datadescni}{XML_ERROR_PUBLICID}
+Characters were found in the public id that are not allowed.
+\end{datadescni}
+
+\begin{datadescni}{XML_ERROR_SUSPENDED}
+The requested operation was made on a suspended parser, but isn't
+allowed.  This includes attempts to provide additional input or to
+stop the parser.
+\end{datadescni}
+
+\begin{datadescni}{XML_ERROR_NOT_SUSPENDED}
+An attempt to resume the parser was made when the parser had not been
+suspended.
+\end{datadescni}
+
+\begin{datadescni}{XML_ERROR_ABORTED}
+This should not be reported to Python applications.
+\end{datadescni}
+
+\begin{datadescni}{XML_ERROR_FINISHED}
+The requested operation was made on a parser which was finished
+parsing input, but isn't allowed.  This includes attempts to provide
+additional input or to stop the parser.
+\end{datadescni}
+
+\begin{datadescni}{XML_ERROR_SUSPEND_PE}
+\end{datadescni}