Re: [Python-Dev] itertools predicates

Well sorry about it, I didn't know about that PEP 8 line, disregard this thread then :) On Fri, Nov 4, 2016 at 2:29 PM, Raymond Hettinger < raymond.hettin...@gmail.com> wrote: > > > On Nov 3, 2016, at 3:51 PM, Steven D'Aprano wrote: > > > > Before there can be a solution,

Re: [Python-Dev] itertools predicates

Stephen, dropwhile(None, ...) was an example, takewhile(None, ...) doesn't works either and it makes a lot of sense IMO. On Thu, Nov 3, 2016 at 7:07 AM, Stephen J. Turnbull < turnbull.stephen...@u.tsukuba.ac.jp> wrote: > Francisco Couzo writes: > > > I'd be interested in writi

[Python-Dev] itertools predicates

Some functions that take a predicate from itertools accept None as its predicate: >>> list(itertools.filterfalse(None, range(10))) [0] >>> list(itertools.groupby([0,0,1,1], None)) [(0, ), (1, )] While others don't: >>> list(itertools.dropwhile(None, range(10))) Traceback (most recent call