Hello, Can sort not modify read-only location.
>>> d
{'a': 1, 'c': 3, 'b': 2}
>>> id(d)
412816
>>> id(d.keys())
404296
>>> type(d.keys())
<type 'list'>
>>> print d.keys().sort()
None
We can so sorted(d.keys()) and it works but was just wondering whether sort
which modifies in-place fails when the location is read-only.
Thanks,
Bhaskar.
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