pascanur/Theano — comment on commit 610b1d16ebdbfd668fa1055bf5aee57e9d250063
File: theano/printing.py line 144
By goodfeli:

Can you change this to return a copy of eval_points rather than eval_points itself? If eval_points is a list and the client modifies eval_points after passing it, then the return value of R_op will get modified too.