[Python-Dev] PEP 572: Assignment Expressions (original) (raw)
Guido van Rossum guido at python.org
Mon Apr 23 18:36:10 EDT 2018
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Using 'as' was debated extensively on python-ideas. I don't like it for several reasons:
- the semantics are subtly different from all other uses of 'as' in Python; I'd like to reserve 'as' for "not a plain assignment"
- a short word is easier to miss when skimming code than punctuation
- most other languages (Java*, C*) borrow from assignment (name = expr)
On Mon, Apr 23, 2018 at 3:19 PM, Ned Deily <nad at python.org> wrote:
On Apr 23, 2018, at 18:04, Tim Peters <tim.peters at gmail.com> wrote: > However, against "as" is that its current use in "with" statements > does something quite different: > > with f() as name: > > does not bind the result of
f()toname, but the result of >f()._enter_(). Whether that "should be" fatal, I don't know, but > it's at least annoying ;-)Prior art: COBOL uses "GIVING", as in: ADD x, y GIVING z No need to re-invent the wheel ;) -- Ned Deily nad at python.org -- []
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