Turning in my Pickle Toolbox

[Mikhaela]

This change is

[jenwei]

Reviewed 5 of 5 files at r1.
Review status: all files reviewed at latest revision, 1 unresolved discussion.

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counter.py, line 39 [r1] (raw file):
This works but could be rewritten as if not exists(file_name) or reset:

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Comments from Reviewable