[Python-Dev] PEP 572 and assert

[Barry Warsaw]

On Jul 17, 2018, at 11:34, Tim Peters <tim.peters at gmail.com> wrote:

> Assuming the result of list(path.iterdir()) can change over time (seems very likely),
> 
>    assert len(list(path.iterdir())) == 0,  list(path.iterdir())
> 
> _could_ end up both triggering and displaying an empty list in the exception detail.  The assignment-expression version cannot.

Tim, you’re dangerously tempting me into +1 territory. :)

-Barry

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