[issue4570] Bad example in set tutorial

[Shashwat Anand]

Shashwat Anand <anand.shashwat at gmail.com> added the comment:

I guess giving fruit, the set of unique fruit a different name makes it more clear. Comments alignment fixed.

>>> basket = {'apple', 'orange', 'apple', 'pear', 'orange', 'banana'}
>>> print(basket)
{'orange', 'bananna', 'pear', 'apple'}
>>> fruit = ['apple', 'orange', 'apple', 'pear', 'orange', 'banana']
>>> uniquefruit = set(fruit)               # create a set without duplicates
>>> uniquefruit
{'orange', 'pear', 'apple', 'banana'}

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nosy: +l0nwlf
Added file: http://bugs.python.org/file16793/datastructure.patch

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<http://bugs.python.org/issue4570>
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