xml application advice
Scott David Daniels
Scott.Daniels at Acm.Org
Wed Jun 10 13:06:17 EDT 2009
William Purcell wrote:
> Scott David Daniels wrote:
>> William Purcell wrote:
>>> I am writing a application to calculate pressure drop for a piping
>>> network. Namely a building sprinkler system. This will be a
>>> command line program at first with the system described in xml....
>> If you are going to be doing a lot of tree walking, try etree.
>> Simple example:
>> import xml.etree.ElementTree as ET # or wherever you get ElementTree
>> def find_remote_and_path(node, path):
>> for child in node:
>> for result in walks(child, path + [node]): yield result
>> if node.tag == 'node' and node.get('hydraulically_most_remote'
>> ) == 'True':
>> yield node, path
>> tree = ET.parse('ex.xml')
>> for node, path in find_remote_and_path(tree.getroot(), ):
>> for t in path:
>> print ' ', t.tag, t.get('id', '-')
>> print node.tag, ', '.join(sorted('%s=%r' % pair
>> for pair in node.items()))
>> --Scott David Daniels
>> Scott.Daniels at Acm.Org
> Scott, Thanks for the reply.
> I am having a little trouble finding where to import `walks` from.
Sorry, renamed and forgot to repaste.
walks is just find_remote_and_path
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