old_contents: """W3C Document Object Model implementation for Python.
  
  The Python mapping of the Document Object Model is documented in the
  Python Library Reference in the section on the xml.dom package.
  
  This package contains the following modules:
  
  minidom -- A simple implementation of the Level 1 DOM with namespace
             support added (based on the Level 2 specification) and other
             minor Level 2 functionality.
  
  pulldom -- DOM builder supporting on-demand tree-building for selected
             subtrees of the document.
  
  """
  
  
  class Node:
      """Class giving the NodeType constants."""
  
      # DOM implementations may use this as a base class for their own
      # Node implementations.  If they don't, the constants defined here
      # should still be used as the canonical definitions as they match
      # the values given in the W3C recommendation.  Client code can
      # safely refer to these values in all tests of Node.nodeType
      # values.
  
      ELEMENT_NODE                = 1
      ATTRIBUTE_NODE              = 2
      TEXT_NODE                   = 3
      CDATA_SECTION_NODE          = 4
      ENTITY_REFERENCE_NODE       = 5
      ENTITY_NODE                 = 6
      PROCESSING_INSTRUCTION_NODE = 7
      COMMENT_NODE                = 8
      DOCUMENT_NODE               = 9
      DOCUMENT_TYPE_NODE          = 10
      DOCUMENT_FRAGMENT_NODE      = 11
      NOTATION_NODE               = 12
  
new_contents: """W3C Document Object Model implementation for Python.
  
  The Python mapping of the Document Object Model is documented in the
  Python Library Reference in the section on the xml.dom package.
  
  This package contains the following modules:
  
  minidom -- A simple implementation of the Level 1 DOM with namespace
             support added (based on the Level 2 specification) and other
             minor Level 2 functionality.
  
  pulldom -- DOM builder supporting on-demand tree-building for selected
             subtrees of the document.
  
  """
  
  
  class Node:
      """Class giving the NodeType constants."""
  
      # DOM implementations may use this as a base class for their own
      # Node implementations.  If they don't, the constants defined here
      # should still be used as the canonical definitions as they match
      # the values given in the W3C recommendation.  Client code can
      # safely refer to these values in all tests of Node.nodeType
      # values.
  
      ELEMENT_NODE                = 1
      ATTRIBUTE_NODE              = 2
      TEXT_NODE                   = 3
      CDATA_SECTION_NODE          = 4
      ENTITY_REFERENCE_NODE       = 5
      ENTITY_NODE                 = 6
      PROCESSING_INSTRUCTION_NODE = 7
      COMMENT_NODE                = 8
      DOCUMENT_NODE               = 9
      DOCUMENT_TYPE_NODE          = 10
      DOCUMENT_FRAGMENT_NODE      = 11
      NOTATION_NODE               = 12
  
  #ExceptionCode
  INDEX_SIZE_ERR                 = 1
  DOMSTRING_SIZE_ERR             = 2
  HIERARCHY_REQUEST_ERR          = 3
  WRONG_DOCUMENT_ERR             = 4
  INVALID_CHARACTER_ERR          = 5
  NO_DATA_ALLOWED_ERR            = 6
  NO_MODIFICATION_ALLOWED_ERR    = 7
  NOT_FOUND_ERR                  = 8
  NOT_SUPPORTED_ERR              = 9
  INUSE_ATTRIBUTE_ERR            = 10
  INVALID_STATE_ERR              = 11
  SYNTAX_ERR                     = 12
  INVALID_MODIFICATION_ERR       = 13
  NAMESPACE_ERR                  = 14
  INVALID_ACCESS_ERR             = 15
  
  class DOMException(Exception):
      """Abstract base class for DOM exceptions.
      Exceptions with specific codes are specializations of this class."""
      
      pass
  
  class IndexSizeErr(DOMException):
      code = INDEX_SIZE_ERR
  
  class DomstringSizeErr(DOMException):
      code = DOMSTRING_SIZE_ERR
  
  class HierarchyRequestErr(DOMException):
      code = HIERARCHY_REQUEST_ERR
  
  class WrongDocumentErr(DOMException):
      code = WRONG_DOCUMENT_ERR
  
  class InvalidCharacterErr(DOMException):
      code = INVALID_CHARACTER_ERR
  
  class NoDataAllowedErr(DOMException):
      code = NO_DATA_ALLOWED_ERR
  
  class NoModificationAllowedErr(DOMException):
      code = NO_MODIFICATION_ALLOWED_ERR
  
  class NotFoundErr(DOMException):
      code = NOT_FOUND_ERR
  
  class NotSupportedErr(DOMException):
      code = NOT_SUPPORTED_ERR
  
  class InuseAttributeErr(DOMException):
      code = INUSE_ATTRIBUTE_ERR
  
  class InvalidStateErr(DOMException):
      code = INVALID_STATE_ERR
  
  class SyntaxErr(DOMException):
      code = SYNTAX_ERR
  
  class InvalidModificationErr(DOMException):
      code = INVALID_MODIFICATION_ERR
  
  class NamespaceErr(DOMException):
      code = NAMESPACE_ERR
  
  class InvalidAccessErr(DOMException):
      code = INVALID_ACCESS_ERR
  
subject: Add standard DOM exception hierarchy.