R. David Murray added the comment:
It could say 'hashable object' instead of immutable object. I don't know if
hash has been introduced by that point, though.
It's the tutorial. Probably better to just leave it alone. Precise
understanding can come later.
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nosy: +r.david.murray
New submission from Xezlec:
In section 5.5 on the page
https://docs.python.org/2/tutorial/datastructures.html#dictionaries the
requirements given for dictionary keys are not correct.
Specifically, it is claimed that only immutable objects (and tuples containing
only immutable objects) may be
