Python Tutorial ( PDFDrive )
The parse Method: Following method creates a SAX parser and uses it to parse a document.xml.sax.parse( xmlfile, contenthandler[, errorhandler])Here is the detail of the parameters:• xmlfile: This is the name of the XML file to read from.• contenthandler: This must be a ContentHandler object.• errorhandler: If specified, errorhandler must be a SAX ErrorHandler object.The parseString Method: There is one more method to create a SAX parser and to parse the specified XML string.xml.sax.parseString(xmlstring, contenthandler[, errorhandler])Here is the detail of the parameters:• xmlstring: This is the name of the XML string to read from.• contenthandler: This must be a ContentHandler object.• errorhandler: If specified, errorhandler must be a SAX ErrorHandler object.EXAMPLE: #!/usr/bin/pythonimport xml.saxclass MovieHandler( xml.sax.ContentHandler ):def __init__(self):self.CurrentData = ""self.type = ""self.format = ""self.year = ""self.rating = ""self.stars = ""self.description = ""# Call when an element startsdef startElement(self, tag, attributes):self.CurrentData = tagif tag == "movie":print "*****Movie*****"title = attributes["title"]print "Title:", title# Call when an elements endsdef endElement(self, tag):if self.CurrentData == "type":print "Type:", self.typeelif self.CurrentData == "format":print "Format:", self.formatelif self.CurrentData == "year":print "Year:", self.yearelif self.CurrentData == "rating":TUTORIALS POINT Simply Easy Learning
print "Rating:", self.ratingelif self.CurrentData == "stars":print "Stars:", self.starselif self.CurrentData == "description":print "Description:", self.descriptionself.CurrentData = ""# Call when a character is readdef characters(self, content):if self.CurrentData == "type":self.type = contentelif self.CurrentData == "format":self.format = contentelif self.CurrentData == "year":self.year = contentelif self.CurrentData == "rating":self.rating = contentelif self.CurrentData == "stars":self.stars = contentelif self.CurrentData == "description":self.description = contentif ( __name__ == "__main__"):# create an XMLReaderparser = xml.sax.make_parser()# turn off namepsacesparser.setFeature(xml.sax.handler.feature_namespaces, 0)# override the default ContextHandlerHandler = MovieHandler()parser.setContentHandler( Handler )parser.parse("movies.xml")This would produce the following result:*****Movie*****Title: Enemy BehindType: War, ThrillerFormat: DVDYear: 2003Rating: PGStars: 10Description: Talk about a US-Japan war*****Movie*****Title: TransformersType: Anime, Science FictionFormat: DVDYear: 1989Rating: RStars: 8Description: A schientific fiction*****Movie*****Title: TrigunType: Anime, ActionFormat: DVDRating: PGStars: 10Description: Vash the Stampede!*****Movie*****TUTORIALS POINT Simply Easy Learning
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print "Rating:", self.rating
elif self.CurrentData == "stars":
print "Stars:", self.stars
elif self.CurrentData == "description":
print "Description:", self.description
self.CurrentData = ""
# Call when a character is read
def characters(self, content):
if self.CurrentData == "type":
self.type = content
elif self.CurrentData == "format":
self.format = content
elif self.CurrentData == "year":
self.year = content
elif self.CurrentData == "rating":
self.rating = content
elif self.CurrentData == "stars":
self.stars = content
elif self.CurrentData == "description":
self.description = content
if ( __name__ == "__main__"):
# create an XMLReader
parser = xml.sax.make_parser()
# turn off namepsaces
parser.setFeature(xml.sax.handler.feature_namespaces, 0)
# override the default ContextHandler
Handler = MovieHandler()
parser.setContentHandler( Handler )
parser.parse("movies.xml")
This would produce the following result:
*****Movie*****
Title: Enemy Behind
Type: War, Thriller
Format: DVD
Year: 2003
Rating: PG
Stars: 10
Description: Talk about a US-Japan war
*****Movie*****
Title: Transformers
Type: Anime, Science Fiction
Format: DVD
Year: 1989
Rating: R
Stars: 8
Description: A schientific fiction
*****Movie*****
Title: Trigun
Type: Anime, Action
Format: DVD
Rating: PG
Stars: 10
Description: Vash the Stampede!
*****Movie*****
TUTORIALS POINT
Simply Easy Learning
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