thx justin, parent map worked for me.
but i think your 2nd option below dont work in python 2.6. bcoz the link which gave is cElementree 1.0.2 and in the site it says cElementree 1.0.5 comes with python 2.5 onwards. i am using python 2.6.4. even in python 2.6 xpath did not work directly to filter the attributes. i have posted a question on this on stackoverflow<http://stackoverflow.com/questions/13171915/how-to-get-parent-tag-while-using-xpaths-in-xml-etree-elementree-with-python-2-6> If you are using the newest cElementTree from pypi<http://pypi.python.org/pypi/cElementTree/1.0.2-20050302> then > you can also modify your xpath to directly filter the id attribute and save > the loop: > > review = root.findall('./ep_150/stage/review[@id="p4645"]') > [" - ".join((parent_map[r].get('name'), r.get('name'))) for r in review] > # ['blk - R3', 'pri - R5'] > On Thursday, November 1, 2012 10:49:41 PM UTC+5:30, Justin Israel wrote: > > I'm not very experienced with xpath, but this link suggests a way to build > a parent-child map once that you can use: > http://effbot.org/zone/element.htm#accessing-parents > > root = ET.fromstring(xmldata) > parent_map = dict((c, p) for p in root.getiterator() for c in p) > ... > for rev in review: > parent = parent_map[rev] > ... > > If you are using the newest cElementTree from > pypi<http://pypi.python.org/pypi/cElementTree/1.0.2-20050302> then > you can also modify your xpath to directly filter the id attribute and save > the loop: > > review = root.findall('./ep_150/stage/review[@id="p4645"]') > [" - ".join((parent_map[r].get('name'), r.get('name'))) for r in review] > # ['blk - R3', 'pri - R5'] > > > And if you have lxml installed, it seems the Element objects let you > directly access the parent: > > review = root.xpath('./ep_150/stage/review[@id="p4645"]') > [" - ".join((r.getparent().get('name'), r.get('name'))) for r in review] > # ['blk - R3', 'pri - R5'] > > > -- justin > > > > On Thu, Nov 1, 2012 at 9:28 AM, damon shelton > <[email protected]<javascript:> > > wrote: > >> perhaps loop through each stage and check its children >> >> >> root = ET.fromstring(xmldata) >> >> stages = root.findall("./ep_150/stage") >> >> print '\n\nreviews for id=p4645\n' >> >> for stage in stages: >> >> children = stage.getchildren() >> >> for child in children: >> >> if child.attrib['id']=='p4645': >> >> print('%s - %s' % (stage.attrib['name'], >> child.attrib['name'])) >> >> >> On Thu, Nov 1, 2012 at 12:23 AM, PBLN RAO <[email protected]<javascript:> >> > wrote: >> >>> >>> >>> I am trying to retrieve data from xml.etree.cElementTree. >>> >>> i have the following code >>> >>> *Code Snippet* >>> >>> >>> import xml.etree.cElementTree as ET >>> >>> xmldata =""" >>> <pipeline> >>> <ep_150> >>> <stage name="lay" longname="layout" department="layout" >>> process="production"> >>> <review name="R1" reviewer="sridhar reddy" role="supervisor" >>> id="p1234"> >>> </review> >>> </stage> >>> <stage name="lip" longname="lipsync" department="lipsync" >>> process="production"> >>> <review name="R2" reviewer="someone" role="supervisor" >>> id="p2345"> >>> </review> >>> </stage> >>> <stage name="blk" longname="blocking" department="animation" >>> process="production"> >>> <review name="R3" reviewer="sudeepth" role="supervisor" >>> id="p4645" dependson='R1'> >>> </review> >>> <review name="R4" reviewer="chandu" role="director" id="p5678"> >>> </review> >>> </stage> >>> <stage name="pri" longname="primary" department="animation" >>> process="production"> >>> <review name="R5" reviewer="sudeepth" role="supervisor" >>> id="p4645" style="dep" > >>> </review> >>> <review name="R6" reviewer="sudeepth" role="bld_supervisor" >>> id="p2556" style="dep"> >>> </review> >>> </stage> >>> <stage name="sec" longname="secondary" department="animation" >>> process="production"> >>> <review name="R7" reviewer="sha" role="supervisor" id="p1234" >>> style="dep"> >>> </review> >>> <review name="R8" reviewer="chandu" role="director" id="p5678"> >>> </review> >>> </stage> >>> </ep_150> >>> </pipeline> >>> """ >>> root = ET.fromstring(xmldata) >>> review = root.findall("./ep_150/stage/review") >>> print '\n\nreviews for id=p4645\n' >>> for rev in review: >>> >>> if rev.attrib['id']=='p4645': >>> print (rev.attrib['name']) >>> >>> with the above code i am getting the result as below >>> >>> reviews for id=p4645 >>> >>> R3 >>> >>> R5 >>> >>> *But i need the output as* >>> >>> reviewes for id=p4645 >>> >>> blk - R3 >>> >>> pri - R5 >>> >>> i.e, i need the parent tag along with the element using Xpaths. >>> >>> I know its possible if i iterate through entire tree. But need to use >>> more loops. >>> >>> -- >>> view archives: http://groups.google.com/group/python_inside_maya >>> change your subscription settings: >>> http://groups.google.com/group/python_inside_maya/subscribe >>> >> >> -- >> view archives: http://groups.google.com/group/python_inside_maya >> change your subscription settings: >> http://groups.google.com/group/python_inside_maya/subscribe >> > > -- view archives: http://groups.google.com/group/python_inside_maya change your subscription settings: http://groups.google.com/group/python_inside_maya/subscribe
