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From: Gary Herron <gherron@digipen.edu>
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Subject: Re: Operator precedence problem
Date: Sun, 5 Jun 2016 00:04:43 -0700
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Xref: csiph.com comp.lang.python:109555

On 06/04/2016 11:53 PM, ICT Ezy wrote:
>>>> 2 ** 3 ** 2
> Answer is 512
> Why not 64?
> Order is right-left or left-right?

Evidently right to left, but you already figured that out.

Python 3.5.1+ (default, Mar 30 2016, 22:46:26)
[GCC 5.3.1 20160330] on linux
Type "help", "copyright", "credits" or "license" for more information.
 >>> 2 ** 3 ** 2
512
 >>> 2 ** (3 ** 2)
512
 >>> (2 ** 3) ** 2
64
 >>>


Here's the relevant documentation page:
     https://docs.python.org/3/reference/expressions.html
Look for "... except for exponentiation, which groups from right to left"

Gary Herron

-- 
Dr. Gary Herron
Professor of Computer Science
DigiPen Institute of Technology
(425) 895-4418