Make gauss() semi-thread-safe.  It can still give duplicate results, but it can no longer raise an exception when called by several threads simultaneously.
Make gauss() semi-thread-safe.  It can still give duplicate results,
but it can no longer raise an exception when called by several threads
simultaneously.

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator