parameters: (self, key)
return_statement: return self._getAttrMap()[key]
docstring: tag[key] returns the value of the 'key' attribute for the tag,
          and throws an exception if it's not there.
docstring_summary: tag[key] returns the value of the 'key' attribute for the tag,
          and throws an exception if it's not there.
docstring_tokens: tag [ key ] returns the value of the key attribute for the tag and throws an exception if it s not there .
function: def __getitem__(self, key):
          """tag[key] returns the value of the 'key' attribute for the tag,
          and throws an exception if it's not there."""
          return self._getAttrMap()[key]
function_tokens: def __getitem__ ( self , key ) : return self . _getAttrMap ( ) [ key ]