13.5.5 Expat error constants
The following constants are provided in the
errors object of
the xml.parsers.expat module. These constants are useful
in interpreting some of the attributes of the ExpatError
exception objects raised when an error has occurred.
errors object has the following attributes:
An entity reference in an attribute value referred to an external
entity instead of an internal entity.
A character reference referred to a character which is illegal in XML
(for example, character
0, or `
An entity reference referred to an entity which was declared with a
notation, so cannot be parsed.
An attribute was used more than once in a start tag.
Raised when an input byte could not properly be assigned to a
character; for example, a NUL byte (value
0) in a UTF-8 input
Something other than whitespace occurred after the document element.
An XML declaration was found somewhere other than the start of the
The document contains no elements (XML requires all documents to
contain exactly one top-level element)..
Expat was not able to allocate memory internally.
A parameter entity reference was found where it was not allowed.
An entity reference contained another reference to the same entity;
possibly via a different name, and possibly indirectly.
Some unspecified syntax error was encountered.
An end tag did not match the innermost open start tag.
Some token (such as a start tag) was not closed before the end of the
stream or the next token was encountered.
A reference was made to a entity which was not defined.
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