from xml.dom.minidom import parseString
import copy
import time
dom1=parseString("<a><b/><b/><b/></a>")
ini=time.time()
bElement=dom1.getElementsByTagName("b")
for i in xrange(0,1000):
    copy.deepcopy(bElement)
print "Time:",time.time()-ini

"""
32bit ubuntu 11.04 virtual machine using virtual box
python 2.7.1+
Time: 0.305788993835
pypy1.6 (with jit)
Time: 1.42044305801
pypy-c-1.6-svn (http://pastebin.com/FhLLNxMT)
Time: 1.2382171154
"""