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Tue Apr 24 18:32:27 EDT 2018 · https://mail.python.org/pipermail/python-dev/2018-April/153012.html

On 24Apr2018 08:51, Ethan Furman <ethan at stoneleaf.us> wrote:
>>When I compare to variables from outer scopes they *usually* are on
>>the *right* side of '=='.
>
>You mean something like
>
>  if 2 == x:
>
>?  I never write code like that, and I haven't seen it, either.

Just to this, I also never write code like that but I've certainly seen it 
advocated.

I think the rationale was that it places the comparison value foremost in one's 
mind, versus the name being tested. I'm not persuaded, but it is another 
subjective situation.

Cheers,
Cameron Simpson <cs at cskk.id.au>

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[Python-Dev] assignment expressions: an alternative proposal