Index: Pyrex-0.9.8.4/Pyrex/Distutils/extension.py =================================================================== --- Pyrex-0.9.8.4.orig/Pyrex/Distutils/extension.py +++ Pyrex-0.9.8.4/Pyrex/Distutils/extension.py @@ -15,7 +15,7 @@ except ImportError: warnings = None class Extension(_Extension.Extension): - _Extension.Extension.__doc__ + \ + _Extension.Extension.__doc__ or "" + \ """pyrex_include_dirs : [string] list of directories to search for Pyrex header files (.pxd) (in Unix form for portability)