[cctbxbb] "import pickle"

markus.gerstel at diamond.ac.uk markus.gerstel at diamond.ac.uk
Fri Sep 23 09:31:41 PDT 2016

Hi everyone,

I note that we are using "import pickle" on some 57 occasions.
Is there a particular reason we don't import cPickle? For example:

--- libtbx/env_config.py        (revision 25451)
+++ libtbx/env_config.py        (working copy)
@@ -7,7 +7,10 @@
 from libtbx import adopt_init_args
 import platform
 import shutil
-import pickle
+  import cPickle as pickle
+  import pickle
 from cStringIO import StringIO
 import re
 import sys, os

This should still work on all systems without issue. According to python docs the only difference is that cPickle can't be subclassed.
If it's alright with you I would go through those imports and update them to use cPickle where possible.


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