Problem with "&" charater in xml.

[Kirt]

How do i append characters to a string?

actually my entire handler code is
class oldHandler(ContentHandler):


                def __init__(self):
  			self.fn = 0
			self.dn = 0
   			self.i=[]
			self.x=""
			self.y=""
			self.z=""
			self.t=0
                        self.xx=''

		def startElement(self, name, attrs):
			if name=='dirname':
				self.dn=1
			if name=='name':
                       		self.fn=1
			if name=='time':
				self.t=1

		def characters(self,str):
			if self.dn:
				self.x=str

			if self.fn:
                                self.y=str
			if self.t:
				self.z=str
				ss= self.x+'/'+self.y+','+self.z+ '\r \n'
				self.i.append(ss)
                def endElement(self, name):
			if name == 'dirname':
				self.dn=0
			if name=='name':
				self.fn=0
			if name=='time':
                                self.t=0


		def endDocument(self):
                    f=open('old.txt', 'w')
		    self.i.sort
                    f.writelines(self.i)
		    f.close
so my old.txt now looks like this
y+def.txt,200607130417
C:\Documents and Settings\Administrator\Desktop\1\hii
wx\abc.txt,200607130415

But i wont the output as
C:\Documents and Settings\Administrator\Desktop\1\bye
w&y\def.txt,200607130417
C:\Documents and Settings\Administrator\Desktop\1\hii
wx\abc.txt,200607130415


Stefan Behnel wrote:
> Kirt wrote:
> > i have walked a directory and have written the foll xml document.
> > one of the folder had "&" character so i replaced it by "&"
> > #------------------test1.xml
> > <Directory>
> >   <dirname>C:\Documents and Settings\Administrator\Desktop\1\bye
> > w&y </dirname>
> >   <file>
> >   <name>def.txt</name>
> >   <time>200607130417</time>
> >   </file>
> > </Directory>
> >  <Directory>
> >   <dirname>C:\Documents and Settings\Administrator\Desktop\1\hii
> > wx</dirname>
> >   <file>
> >   <name>abc.txt</name>
> >   <time>200607130415</time>
> >   </file>
> > </Directory
> >
> > now in my python code i want to parse this doc and print the directory
> > name.
> > ###----------handler------------filename---handler.py
> > from xml.sax.handler import ContentHandler
> > class oldHandler(ContentHandler):
> >                def __init__(self):
> >   			self.dn = 0
> >                 def startElement(self, name, attrs):
> > 			if name=='dirname':
> > 				self.dn=1
> >
> > 		def characters(self,str):
> > 			if self.dn:
> >                                print str
>
>
> The problem is here. "print" adds a newline. Don't use print, just append the
> characters (to a string or list) until the endElement callback is called.
>
>
> >                 def endElement(self, name):
> > 			if name == 'dirname':
> >                          	self.dn=0
> >
> >
> > #---------------------------------------------------------------------
> > #main code--- fname----art.py
> > import sys
> > from xml.sax 	import 	make_parser
> > from handlers import	oldHandler
> >
> > ch = oldHandler()
> > saxparser = make_parser()
> >
> > saxparser.setContentHandler(ch)
> > saxparser.parse(sys.argv[1])
> > #-----------------------------------------------------------------------------
> > i run the code as:  $python art.py test1.xml
> >
> > i am getting output as:
> >
> > C:\Documents and Settings\Administrator\Desktop\1\bye w
> > &
> > y
> > C:\Documents and Settings\Administrator\Desktop\1\hii wx
> >
> > where as i need an output which should look like this.
> > C:\Documents and Settings\Administrator\Desktop\1\bye w&y
> >
> > C:\Documents and Settings\Administrator\Desktop\1\hii wx
> > 
> > Can someone tell me the solution for this.
> >