1 2 from markdown import message, CRITICAL 3 import sys 4 5 ## Import 6 def importETree(): 7 """Import the best implementation of ElementTree, return a module object.""" 8 etree_in_c = None 9 try: # Is it Python 2.5+ with C implemenation of ElementTree installed? 10 import xml.etree.cElementTree as etree_in_c 11 except ImportError: 12 try: # Is it Python 2.5+ with Python implementation of ElementTree? 13 import xml.etree.ElementTree as etree 14 except ImportError: 15 try: # An earlier version of Python with cElementTree installed? 16 import cElementTree as etree_in_c 17 except ImportError: 18 try: # An earlier version of Python with Python ElementTree? 19 import elementtree.ElementTree as etree 20 except ImportError: 21 message(CRITICAL, "Failed to import ElementTree") 22 sys.exit(1) 23 if etree_in_c and etree_in_c.VERSION < "1.0": 24 message(CRITICAL, "For cElementTree version 1.0 or higher is required.") 25 sys.exit(1) 26 elif etree_in_c : 27 return etree_in_c 28 elif etree.VERSION < "1.1": 29 message(CRITICAL, "For ElementTree version 1.1 or higher is required") 30 sys.exit(1) 31 else : 32 return etree 33 34
