ElementTree : parse string input

[rajarshi . guha]

Hi, recently having discovered ElementTree I'm stumped by a very simple
problem, which I can't find the answer to.

I have some XML in a string object. Now the parse() method of
ElementTree takes a filename or file-like object. So I tried creating a
StringIO object from the original string and then giving that to
parse(). But that does not seem to work.

Any pointers to getting ElementTree to parse from a string would be
appreciated (of course I could dump it to a temp file, but that doesn't
seem elegent)

Thanks,
Rajarshi

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Re: iterate over a series of nodes in an XML file

[rajarshi . guha]

Stefan Behnel wrote:
> [EMAIL PROTECTED] wrote:
> > I have an XML file which contains entries of the form:
> >
> > 
> >  1
> >  2
> > 
> >  1
> > 


Thanks to everybody for the pointers. ElementTree is what I ended up
using and my looks like this (based on the ElementTree tutorial code):

def extractIds(filename):
f = open(filename,'r')
context = ET.iterparse(f, events=('start','end'))
context = iter(context)
even, root = context.next()

for event, elem in context:
if event == 'end' and elem.tag == 'Id':
yield elem.text
root.clear()

As a result I can do:

for id in extractIds(someFileName):
  do something

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iterate over a series of nodes in an XML file

[rajarshi . guha]

Hi, I have an XML file which contains entries of the form:


 1
 2

 1


Currently, I have written a SAX based handler that will read in all the
 entries and return a list of the contents of these
entries. However this is not scalable and for my purposes it would be
better if I could iterate over the list of  nodes. Some thing
like:

for myid in getMyIDList(document):
   print myid

I realize that I can do this with generators, but I can't see how I can
incorporate generators into my handler class (which is a subclass of
xml.sax.ContentHandler).

Any pointers would be appreciated

Thanks,
Rajarshi

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packaging a python project and associated graphics files

[Rajarshi Guha]

Hi, I've been trying to package a python project and I'm a little confused
about how I distribute some PNG's that the program uses as icons.

Using distutils I can set the data_files argument of setup() and get my
data files located in, say, /usr/local/mydata.

However when I write my code, it would seem that I have to hardcode the
above path. But this would mean that while working on the code I would
need to have it 'installed' on my system (or else actually make the above
directory).

This seems a little unwieldy. How do people handle this situation?

Thanks,

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accesing pages (or ranges of pages) via Reportlab

[Rajarshi Guha]

Hi, I've been using pdflatex to dump ranges of pages from a PDF file via
Python. However, I was looking at the Reportlab toolkit and was wondering
if this operation would be possible using this toolkit as well.

Admittedly, I have'nt read the documentation in detail, but I was
wondering if anybody could provide any pointers to extracting pages from a
PDF via Python without using pdflatex

Thanks,
Rajarshi

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