[Python-Dev] Suggested addition to PEP 8 for context managers
eliben at gmail.com
Thu Apr 19 05:06:35 CEST 2012
>>> Quoting from
>>> (with elision):
>>> Use spaces around arithmetic operators:
>>> submitted +=1
>>> x = x*2 - 1
>>> hypot2 = x*x + y*y
>>> c = (a+b) * (a-b)
>>> End quote.
>> I agree that this could be reworded. Especially when the operands are
>> as short as in the examples, the last three "No"s read better to me than
>> the "Yes" entries. In this case, spacing serves for visually grouping
>> expressions by precedence, which otherwise could also be indicated by
>> (semantically unnecessary) parens.
> Indeed. I don't know who put that in, it wasn't me.
>> But in all cases discussed here, PEP8 should not be seen as a law.
>> Its second section ("A Foolish Consistency is the Hobgoblin of Little
>> Minds") is quite prominent for a reason.
> I think whoever put that blanket rule in the PEP fell prey to this.
> Let's change this to something more reasonable, e.g.
> If operators with different priorities are used, consider adding
> whitespace around the operators with the lowest priority(ies). This is
> very much to taste, however, never use more than one space, and always
> have the same amount of whitespace on both sides of a binary operator.
+1, a very welcome change to a piece of PEP8 I've always felt
uncomfortable with. Tiny nitpick: I'd just replace the comma following
"however" with a period or semicolon.
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