[pykml] "AttributeError: 'lxml.etree._ElementTree' object has no attribute 'Document'

[Winfried]

Hello,

I'm getting started with pykml to read/edit KML files, and am stuck right at the beginning with this error:

import lxml
from pykml import parser

"""
dummy.kml:
<?xml version="1.0" encoding="UTF-8"?>
<kml xmlns="http://earth.google.com/kml/2.0">
  <Document>
    <name>KML Samples</name>
    <open>1</open>
    etc.
"""    

doc=None
with open('dummy.kml') as f:
	doc = parser.parse(f)

print(doc.Document.name)
"""
d:\>Read.KML.py
Traceback (most recent call last):
  File "D:\Read.KML.py", line 15, in <module>
    print(doc.Document.name)
AttributeError: 'lxml.etree._ElementTree' object has no attribute 'Document'
"""

Am I missing something to keep pykml/lxml happy?

Thank you.

[snippsat]

You are reading from file now,Document attribute is only in use when read from string.
Do print(dir(doc)) to see what attributes you can use with doc....

[Winfried]

Thanks.

The problem I have is that pykml's documentation zeroes in on creating KML files, but has virtually nothing about reading/editing existing files.

from os import path

kml_file = path.join( \
      '../src/pykml/test', \
      'testfiles/google_kml_developers_guide', \
      'complete_tour_example.kml')

with open(kml_file) as f:
      doc = parser.parse(f)

I'll read up on lxml, which pykml depends on.

---
Edit: Here's some working code:

import lxml
#import pykml
from pykml import parser

doc=None
with open('dummy.kml') as f:
	doc = parser.parse(f).getroot()

for e in doc.Document.Folder.Placemark:
  coor = e.LineString.coordinates.text.split(',')
  print(coor)

[Winfried]

And here's how to read coordinates from a single Placemark section in a bigger KML file, and build a smaller file with just that part:

from pykml import parser
from lxml import etree
from pykml.factory import KML_ElementMaker as KML

with open('input.kml') as f:
	tree = parser.parse(f)
root = tree.getroot()
coords = root.Document.Folder.Placemark.LineString.coordinates

doc = KML.kml(
    KML.Placemark(
        KML.name("test"),
        KML.Style(KML.LineStyle(KML.color("FF0000FF"))),
        KML.LineString(
            KML.coordinates(coords)
        )
    )
)

outfile = open('output.kml','wb')
outfile.write(etree.tostring(doc, pretty_print=True))