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daniel steinberg
14,651 Points__getattribute__ question
I am trying to understand Kenneth discuss getattribute.
code:
class JavaScriptObject(dict):
def __getattribute__(self, item):
try:
return self[item]
except KeyError:
return super().__getattribute__(item)
In the following code he says the
except KeyError:
return super().__getattribute__(item)
will look for an attribute with dot notation in the original dict
What would be an example of an an "attribute with dot notation in the original dict"
that would not be found in the 'try' section but would be found in the 'except' section?
He does not give an example unfortunately.
Thanks
1 Answer

Chris Freeman
Treehouse Moderator 68,227 PointsGood question. Python uses the __getattribute__
method to get methods as well as "regular" attributes.
>>> class JavaScriptObject(dict):
... def __getatt... ribute__(self, item):
... try:
... return self[item]
... except KeyError:
... print("in mydict.__getattribute__ for", str(item))
... return super().__getattribute__(item)
...
>>> j = JavaScriptObject()
>>> j.items()
in mydict.__getattribute__ for items
dict_items([])
>>> j['foo'] = 'bar'
>>> j.foo
'bar'
>>> j.keys()
in mydict.__getattribute__ for keys
dict_keys(['foo'])
Post back if you need more help. Good luck!!