On Tue, Jul 03, 2018 at 09:54:22PM -0400, Terry Reedy wrote:
> > results = [(x, y, x/y) for x in input_data for y in [f(x)] if y > 0] > > Would (f(x),) be faster? There is a deferred feature request to optimize "for x in [item]" as equivalent to "for x in (item,)", to avoid constructing a list: https://bugs.python.org/issue32856 Since it only affects the internal byte-code, not visible semantics (aside from speed and memory) I think that's a neat micro-optimization regardless of whether it is applied to comprehensions or regular for-loops or both. -- Steve _______________________________________________ Python-Dev mailing list Python-Dev@python.org https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
