Paddy wrote:
> And the ellipses ... ?
;)
py> class Bob(dict):
... def __getitem__(self, k, *args, **kwargs):
... if k is Ellipsis:
... return sorted(self.keys())
... else:
... return dict.__getitem__(self, k, *args, **kwargs)
... def __setitem__(self, k, *args, **kwargs):
... if k is Ellipsis:
... raise KeyError, "Can't make elliptical assignments."
... else:
... return dict.__setitem__(self, k, *args, **kwargs)
...
py> b = Bob(a=1, b=2, c=3, d=15.5)
py> b
{'a': 1, 'b': 2, 'c': 3, 'd': 15.5}
py> for k in b[...]:
print '%s ==> %s' % (k, b[k])
...
a ==> 1
b ==> 2
c ==> 3
d ==> 15.5
py> b[...] = 2
------------------------------------------------------------
Traceback (most recent call last):
File "<ipython console>", line 1, in <module>
File "<ipython console>", line 9, in __setitem__
<type 'exceptions.KeyError'>: "Can't make elliptical assignments."
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