[Python-Dev] PEP 572: Assignment Expressions (original) (raw)

Ethan Furman ethan at stoneleaf.us
Tue Apr 24 10:24:12 EDT 2018

On 04/23/2018 06:42 PM, Chris Jerdonek wrote:

On Mon, Apr 23, 2018 at 4:54 PM, Greg Ewing wrote:

Tim Peters wrote:

if (diff := x - xbase) and (g := gcd(diff, n)) > 1: return g

My problem with this is -- how do you read such code out loud? It could be-- "if diff, which we let equal x - xbase, and g, which ..." or "if diff, which we set equal to x - xbase, and g, which ...." or "if diff, which we define to be x - xbase, and g, which ...." or "if diff, which we define as x - xbase, and g, which ....." etc.

Thanks, Chris J.

For myself, I can read that as

"if diff, which is x - x_base, and g, which is ..."

That works for me.

Changing my vote to

+1 (but only for simple name bindings)

-- Ethan

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