[Tutor] Python XML for newbie

[Sean Carolan]

> Thank you, this is helpful.  Minidom is confusing, even the
> documentation confirms this:
> "The name of the functions are perhaps misleading...."
>
>> But I'd start with the etree tutorial (of which
>> there are many variations on the web):

Ok, so I read through these tutorials and am at least able to print
the XML output now.  I did this:

doc = etree.parse('computer_books.xml')

and then this:

for elem in doc.iter():
    print elem.tag, elem.text

Here's the data I'm interested in:

index 1
field 11
value 9780596526740
datum

How do you say, "If the field is 11, then print the next value"?  The
raw XML looks like this:

<datum>
<index>1</index>
<field>11</field>
<value>9780470286975</value>
</datum>

Basically I just want to pull all these ISBN numbers from the file.