Matthew Thorley wrote: > Why does ElementTree.parse convert my xsi to an xmlns?
because it is a namespace prefix, perhaps? > When I do this > from elementtree import ElementTree > > # Sample xml > mgac =""" > <mgac xmlns="http://www.chpc.utah.edu/~baites/mgacML"; > xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; > xsi:schemaLocation="http://www.chpc.utah.edu/~baites/mgacML > http://www.chpc.utah.edu/~baites/mgacML/mgac.xsd";><cluster > name="Si4H"></cluster></mgac> > """ > > xml = ElementTree.fromstring(mgac) > ElementTree.tostring(xml) > > I get this > '<ns0:mgac ns1:schemaLocation="http://www.chpc.utah.edu/~baites/mgacML > http://www.chpc.utah.edu/~baites/mgacML/mgac.xsd"; > xmlns:ns0="http://www.chpc.utah.edu/~baites/mgacML"; > xmlns:ns1="http://www.w3.org/2001/XMLSchema-instance";><ns0:cluster > name="Si4H" /></ns0:mgac>' > > The xsi is gone and has been replaced by a new xmlns, which is also NOT > inherited by the child elements. the xsi is a namespace prefix, which maps to a namespace URI. the child element doesn't use that namespace, so there's no need to add a namespace declaration. > ElementTree.tostring(xml.getchildren()[0]) > > '<ns0:cluster name="Si4H" > xmlns:ns0="http://www.chpc.utah.edu/~baites/mgacML"; />' > > If some one could please explain where I'm off I'd really appreciate it. > I need to use xsi: to validate the document are you sure? the prefix shouldn't matter; it's the namespace URI that's important. if you're writing code that depends on the namespace prefix rather than the name- space URI, you're not using namespaces correctly. when it comes to namespaces, elementtree forces you to do things the right way: http://www.jclark.com/xml/xmlns.htm (unfortunately, the XML schema authors didn't understand namespaces so they messed things up: http://www.w3.org/2001/tag/doc/qnameids-2002-04-30 to work around this, see oren's message about how to control the namespace/prefix mapping. in worst case, you can manually insert xsi:-attributes in the tree, and rely on the fact that the default writer only modifies universal names) </F> -- http://mail.python.org/mailman/listinfo/python-list
