[Python-Dev] syntactic support for sets

Greg Wilson gvwilson at cs.utoronto.ca
Wed Feb 1 22:48:23 CET 2006

> The PEP records that Tim argued for leaving the extra parentheses. What
> would you do with {'title'} -- create a four element set consisting of
> letters or a single element set consisting of a string?

This is a moderately-fertile source of bugs for newcomers: judging from
the number of students who come into my office with code that they think
ought to work, but doesn't, most people believe that:

    set(1, 2, 3)

is "right".  I believe curly-brace notation would eliminate this problem.


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