Elementtree find problem

[Mike Slinn]

The following short Python program parses a KML file and displays the
names of all Marks and Routes:

from elementtree.ElementTree import ElementTree
tree = ElementTree(file='test.kml')
kml = tree.getroot()
ns = 'http://earth.google.com/kml/2.1'
for folder in kml.findall("{%s}Folder/{%s}Folder/{%s}name" % (ns, ns, ns)):
print folder.text

I want to modify the program to ignore Marks, and print out the
coordinates of each Route. Seems ElementTree v1.3 will make this task
much easier, but unfortunately the CheeseShop and the Gentoo Portage
repostitory only have v1.2.7 at this time. The following code is as
close as I can get to what I want, but it doesn't run because I've
attempted to use v1.3 syntax, ended up writing complete crap instead,
and I can't understand the docs well enough for the v1.2.7 syntax.
Perhaps someone can understand what I mean and give me a clue as to how
to write this?

from elementtree.ElementTree import ElementTree

tree = ElementTree(file='test.kml')
kml = tree.getroot()
ns = 'http://earth.google.com/kml/2.1'
for folders in kml.findall("{%s}Folder/{%s}Folder" % (ns, ns)):
if folders["name"].text=='Routes':
print folder.findall("{%s}LineString/{%s}coordinates" % (ns,
ns))

Thanks,

Mike

 

[Stefan Behnel]

The following short Python program parses a KML file and displays the
names of all Marks and Routes:

from elementtree.ElementTree import ElementTree
tree = ElementTree(file='test.kml')
kml = tree.getroot()
ns = 'http://earth.google.com/kml/2.1'
for folder in kml.findall("{%s}Folder/{%s}Folder/{%s}name" % (ns, ns, ns)):
print folder.text

I want to modify the program to ignore Marks, and print out the
coordinates of each Route. Seems ElementTree v1.3 will make this task
much easier, but unfortunately the CheeseShop and the Gentoo Portage
repostitory only have v1.2.7 at this time.

You can install the current developer version of ET 1.3 from here:

http://svn.effbot.org/public/elementtree-1.3

Or use lxml, which comes with full-fledged XPath support.

http://codespeak.net/lxml

The following code is as
close as I can get to what I want, but it doesn't run because I've
attempted to use v1.3 syntax, ended up writing complete crap instead,
and I can't understand the docs well enough for the v1.2.7 syntax.
Perhaps someone can understand what I mean and give me a clue as to how
to write this?

from elementtree.ElementTree import ElementTree

tree = ElementTree(file='test.kml')
kml = tree.getroot()
ns = 'http://earth.google.com/kml/2.1'
for folders in kml.findall("{%s}Folder/{%s}Folder" % (ns, ns)):
if folders["name"].text=='Routes':
print folder.findall("{%s}LineString/{%s}coordinates" % (ns,
ns))

What's "name" here? An attribute? Then this might work better:

if folders.get("name") == 'Routes':

or did you mean it to be a child node?

if folders.findtext("name") == 'Routes':

Stefan