On Tue, May 01, 2018 at 11:04:55AM +1000, Chris Angelico wrote:

To be fair, I don't see many people replacing "x = 1" with "for x in [1]: pass". Even though it IS going to have the same effect. :-)

Aside from the pass, that is precisely one of the current work-arounds for lack of binding-expressions inside comprehensions: # inefficient, and wrong when f(x) has side-effects [f(x) for x in iterable if f(x) > 1] # what we'd like [y for x in iterable if (y := f(x)) > 1] # a work-around [y for x in iterable for y in [f(x)] if y > 1] I think that's even in your PEP, isn't it? -- Steve