[PATCH v3] py3: conditionalize the cPickle import

[Pulkit Goyal]

On Tue, May 31, 2016 at 8:45 PM, Bryan O'Sullivan <bos at serpentine.com> wrote:
> I would suggest writing functions for loading and dumping pickles in util
> instead. This will eliminate all the duplicated code, and will also let you
> write the module loading code lazily.
>
There were just five files using the library, so adding it in the util
was an overkill. Most of the libraries added in util are used widely
in the codebase.