[Python-ideas] PEP8 operator must come before line break

Guido van Rossum guido at python.org
Thu Apr 14 13:02:02 EDT 2016

On Thu, Apr 14, 2016 at 9:58 AM, Random832 <random832 at fastmail.com> wrote:
> On Thu, Apr 14, 2016, at 12:35, Guido van Rossum wrote:
>> Where in PEP 8 does it violate its own advice? That's a bug. (The PEP
>> has many authors by now.)
>> As the PEP acknowledges, style is hard to agree over. It's even harder
>> to change an agreement that has been documented (if not always
>> followed consistently) for over 20 years.
>> My rationale for this rule is that ending a line in a binary operator
>> is a clear hint to the reader that the line isn't finished. (If you
>> think about it, a comma is a kind of binary operator, and you wouldn't
>> move the comma to the start of the continuation line, would you? :-)
> Well, yes, but "and" and "or" are English conjunctions in addition to
> being binary operators and, a line break is a natural break in reading
> and, something flows more naturally if you pause before conjunctions
> rather than after them or, am I completely wrong about that?
> What I'm saying is, maybe there should be a separate rule for "and" and
> "or" in certain contexts, rather than a universal rule for all binary
> operators.

OK, do you want to moderate the discussion about that particular
issue? If you can gather support from some of the usual suspects I'm
not against being persuaded.

--Guido van Rossum (python.org/~guido)

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