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From: Devin Jeanpierre <jeanpierreda@gmail.com>
Date: Wed, 10 Jun 2015 16:39:49 -0700
Subject: Re: enhancement request: make py3 read/write py2 pickle format
To: Terry Reedy <tjreedy@udel.edu>
Cc: "comp.lang.python" <python-list@python.org>
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Xref: csiph.com comp.lang.python:92432

On Wed, Jun 10, 2015 at 4:25 PM, Terry Reedy <tjreedy@udel.edu> wrote:
> On 6/10/2015 6:10 PM, Devin Jeanpierre wrote:
>
>> The problem is that there are two different ways repr might write out
>> a dict equal to {'a': 1, 'b': 2}. This can make tests brittle
>
>
> Not if one compares objects rather than string representations of objects.
> I am strongly of the view that code and tests should be written to directly
> compare objects as much as possible.

For serialization formats that always output the same string for the
same data (like text format protos), there is no practical difference
between the two, except that if you're comparing text, you can easily
supply a diff to update one to match the other.

-- Devin