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-rw-r--r--extras/crystal.py5
1 files changed, 4 insertions, 1 deletions
diff --git a/extras/crystal.py b/extras/crystal.py
index ef03ec116..d303c9dfd 100644
--- a/extras/crystal.py
+++ b/extras/crystal.py
@@ -11,7 +11,10 @@ from bisect import bisect_left, bisect_right
from itertools import izip
#for testing all this crap
-import unittest2 as unittest
+try:
+ import unittest2 as unittest
+except ImportError:
+ import unittest
if not hasattr(json, "dumps"):
json.dumps = json.write