Solved

Python XML issue

Posted on 2011-02-16
3
1,749 Views
Last Modified: 2012-05-11
I'm having difficulty parsing an xml file and then searching the tree with xpath.
What am I doing wrong here?

2 from xml.etree.ElementTree import ElementTree
    3  tree = ElementTree()
    4  myTree = tree.parse('myFile.xml')
    5  root=myTree.getroot()
    6
    7     #error1: AttributeError: _ElementInterface instance has no attribute '      > getroot'
    8
    9  for node in myTree.findall('/*/path'):
   10
   11     #error2: SyntaxError: cannot use absolute path on element
   12
0
Comment
Question by:tmonteit
  • 3
3 Comments
 
LVL 28

Accepted Solution

by:
pepr earned 500 total points
ID: 34913985
Try the following:

from xml.etree.ElementTree import ElementTree

tree = ElementTree()
myRoot = tree.parse('myFile.xml')
print myRoot

root = tree.getroot()
print root

for node in tree.findall('/*/path'):
    print node

Open in new window


The problem is that the parse() method of the ElementTree class instance does not return the ElementTree object. It returns the root element of the tree.  The .getroot() may not be applied here.  But you can apply it to the tree object.  The same holds for the .findall().

It is probably more usual to call the parse() function of the whole module (i.e. not the same-name method of the element).  Try the modified code that should do the same:

import xml.etree.ElementTree as ET

tree = ET.parse('myFile.xml')
root = tree.getroot()
print root

for node in tree.findall('./*/path'):
    print node

Open in new window


Notice that the ET is the module, not the class (a different form of the import command).
0
 
LVL 28

Expert Comment

by:pepr
ID: 34913998
I do recommend to read the Chapter 12. XML from the "Dive Into Python 3" by Mark Pilgrim.  It uses Python 3, but you can apply it also to Python 2.x.
0
 
LVL 28

Expert Comment

by:pepr
ID: 34914198
Sorry, I forgot to include the URL: http://diveintopython3.org/xml.html
0

Featured Post

DevOps Toolchain Recommendations

Read this Gartner Research Note and discover how your IT organization can automate and optimize DevOps processes using a toolchain architecture.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
how to split this type of line? 5 92
Word files to Wordpress Posts 2 50
How to generate a random directed graph 5 59
Python - desktop use 1 29
This article will show the steps for installing Python on Ubuntu Operating System. I have created a virtual machine with Ubuntu Operating system 8.10 and this installing process also works with upgraded version of Ubuntu OS. For installing Py…
Strings in Python are the set of characters that, once defined, cannot be changed by any other method like replace. Even if we use the replace method it still does not modify the original string that we use, but just copies the string and then modif…
Learn the basics of if, else, and elif statements in Python 2.7. Use "if" statements to test a specified condition.: The structure of an if statement is as follows: (CODE) Use "else" statements to allow the execution of an alternative, if the …
Learn the basics of while and for loops in Python.  while loops are used for testing while, or until, a condition is met: The structure of a while loop is as follows:     while <condition>:         do something         repeate: The break statement m…

813 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

10 Experts available now in Live!

Get 1:1 Help Now