Merged revisions 72223 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
........
r72223 | antoine.pitrou | 2009-05-02 23:13:23 +0200 (sam., 02 mai 2009) | 5 lines
Isue #5084: unpickling now interns the attribute names of pickled objects,
saving memory and avoiding growth in size of subsequent pickles. Proposal
and original patch by Jake McGuire.
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diff --git a/Lib/pickle.py b/Lib/pickle.py
index 409d4b2..b94b305 100644
--- a/Lib/pickle.py
+++ b/Lib/pickle.py
@@ -1195,7 +1195,15 @@
if isinstance(state, tuple) and len(state) == 2:
state, slotstate = state
if state:
- inst.__dict__.update(state)
+ d = inst.__dict__
+ intern = sys.intern
+ try:
+ for k, v in state.items():
+ d[intern(k)] = v
+ # keys in state don't have to be strings
+ # don't blow up, but don't go out of our way
+ except TypeError:
+ d.update(state)
if slotstate:
for k, v in slotstate.items():
setattr(inst, k, v)