allow line break at operators

Chris Angelico rosuav at
Fri Aug 12 16:09:56 EDT 2011

On Fri, Aug 12, 2011 at 6:57 PM, rantingrick <rantingrick at> wrote:
> I'm glad you brought this up! How about this instead:
>    a = x + y * z
> ...where the calculation is NOT subject to operator precedence? I
> always hated using parenthesis in mathematical calculations. All math
> should resolve in a linear fashion. 3+3*2 should always be 12 and NOT
> 9!

Why is left-to-right inherently more logical than
multiplication-before-addition? Why is it more logical than
right-to-left? And why is changing people's expectations more logical
than fulfilling them? Python uses the + and - symbols to mean addition
and subtraction for good reason. Let's not alienate the mathematical
mind by violating this rule. It would be far safer to go the other way
and demand parentheses on everything.

Incidentally, in the original expression, it would be slightly more
sane to write it as:

a = x + y) * z

borrowing from the musical concept that a repeat sign with no
corresponding begin-repeat means to repeat from the beginning. But
both of these violate XKCD 859.

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