5 def __init__(self, fields={}, element=None, keys=None):
7 dict.__init__(self, dict.fromkeys(self.fields))
12 self[key] = fields[key]
14 def __getattr__(self, attr):
15 if hasattr(self, attr):
16 return getattr(self, attr)
17 elif self.element is not None and hasattr(self.element, attr):
18 return getattr(self.element, attr)
19 raise AttributeError, "Element class has no attribute %s" % attr