[Python-ideas] unify usage of mutable and immutable objects

[David Mertz]

On Tue, Feb 28, 2017 at 5:59 AM, 语言破碎处 <mlet_it_bew at 126.com> wrote:

> bad example:
>     a = set()
>     a.add(1)        # return None; "a" changed
>     e = a.pop();
>

That is simply misspelled for your intent.

a = set()

a |= {1}

e = a.pop()



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