Don't insist on cStringIO.
diff --git a/Lib/pprint.py b/Lib/pprint.py
index a7868cc..7e7ef67 100644
--- a/Lib/pprint.py
+++ b/Lib/pprint.py
@@ -36,7 +36,7 @@
 
 import sys as _sys
 
-from cStringIO import StringIO as _StringIO
+from StringIO import StringIO as _StringIO
 
 __all__ = ["pprint","pformat","isreadable","isrecursive","saferepr",
            "PrettyPrinter"]