@mjanderson09 great job!
Don't need to do it now. You can do it in a different PR.
For the record, here is the effect of the changes on the accuracy in the image prediction example:
#220) * Added test for retriving variables from an optimizer * Added comments to test * Addressed comments * Fixed travis bug * Added fix to circular controls * Added set for explored operations and duplicate prefix stripping * Removed embeded ipython * Removed prefix, use seperate graph for each network * Removed redundant imports * Addressed comments and added separate graph to initializer * fix typos * get rid of prefix in documentation