New in version 2.0.
SAX parsers implement the XMLReader interface. They are implemented in a Python module, which must provide a function create_parser(). This function is invoked by xml.sax.make_parser() with no arguments to create a new parser object.
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When the parser is instantiated it is ready to begin accepting data from the feed method immediately. After parsing has been finished with a call to close the reset method must be called to make the parser ready to accept new data, either from feed or using the parse method.
Note that these methods must not be called during parsing, that is, after parse has been called and before it returns.
By default, the class also implements the parse method of the XMLReader interface using the feed, close and reset methods of the IncrementalParser interface as a convenience to SAX 2.0 driver writers.
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This class may include information about the public identifier, system identifier, byte stream (possibly with character encoding information) and/or the character stream of an entity.
Applications will create objects of this class for use in the XMLReader.parse() method and for returning from EntityResolver.resolveEntity.
An InputSource belongs to the application, the XMLReader is not allowed to modify InputSource objects passed to it from the application, although it may make copies and modify those.
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