Lib/xml.py

   1 """Core XML support for Python.
   2
   3 This package contains four sub-packages:
   4
   5 dom -- The W3C Document Object Model.  This supports DOM Level 1 +
   6        Namespaces.
   7
   8 parsers -- Python wrappers for XML parsers (currently only supports Expat).
   9
  10 sax -- The Simple API for XML, developed by XML-Dev, led by David
  11        Megginson and ported to Python by Lars Marius Garshol.  This
  12        supports the SAX 2 API.
  13
  14 etree -- The ElementTree XML library.  This is a subset of the full
  15        ElementTree XML release.
  16
  17 """
  18
  19 import sys
  20 import xmlcore
  21
  22 __all__ = ["dom", "parsers", "sax", "etree"]
  23
  24 # When being checked-out without options, this has the form
  25 # "<dollar>Revision: x.y </dollar>"
  26 # When exported using -kv, it is "x.y".
  27 __version__ = "$Revision$".split()[-2:][0]
  28
  29
  30 _MINIMUM_XMLPLUS_VERSION = (0, 8, 4)
  31
  32 try:
  33     import _xmlplus
  34 except ImportError:
  35     sys.modules[__name__] = xmlcore
  36 else:
  37     try:
  38         v = _xmlplus.version_info
  39     except AttributeError:
  40         # _xmlplus is too old; ignore it
  41         pass
  42     else:
  43         if v >= _MINIMUM_XMLPLUS_VERSION:
  44             _xmlplus.__path__.extend(xmlcore.__path__)
  45             sys.modules[__name__] = _xmlplus
  46         else:
  47             del v