fields = {}
- def __init__(self, fields={}, element=None, keys=None):
+ def __init__(self, fields=None, element=None, keys=None):
+ if fields is None:
+ fields = {}
self.element = element
dict.__init__(self, dict.fromkeys(self.fields))
if not keys:
keys = fields.keys()
for key in keys:
if key in fields:
- self[key] = fields[key]
-
+ self[key] = fields[key]
def __getattr__(self, name):
if hasattr(self.__dict__, name):
elif hasattr(self.element, name):
return getattr(self.element, name)
else:
- raise AttributeError, "class Element has no attribute %s" % name
+ raise AttributeError("class Element of type {} has no attribute {}"
+ .format(self.__class__.__name__, name))