1 files changed, 5 insertions, 1 deletions
diff --git a/doc/cdoc/numpyfilter.py b/doc/cdoc/numpyfilter.py
index 60bee1b51..7137df2d2 100755
--- a/doc/cdoc/numpyfilter.py
+++ b/doc/cdoc/numpyfilter.py
@@ -13,7 +13,11 @@ import re
 import os
 import textwrap
 import optparse
-import cPickle as pickle
+
+if sys.version_info[0] >= 3:
+    import pickle
+else:
+    import cPickle as pickle.
 
 CACHE_FILE = 'build/rst-cache.pck'