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Docs: a brief note in the sets tutorial about order #145984

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Docs: a brief note in the sets tutorial about order #145984

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3 changes: 3 additions & 0 deletions Doc/tutorial/datastructures.rst
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Expand Up @@ -493,6 +493,9 @@ Curly braces or the :func:`set` function can be used to create sets. Note: to
create an empty set you have to use ``set()``, not ``{}``; the latter creates an
empty dictionary, a data structure that we discuss in the next section.

Because sets are unordered, iterating over them or printing them can
produce the elements in a different order than you expect.

Here is a brief demonstration::

>>> basket = {'apple', 'orange', 'apple', 'pear', 'orange', 'banana'}
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