autopep8 cleanup of Examples/test-suite/python

automated cleanup of python pep8 whitespace compliance

Examples/test-suite/python/python_abstractbase_runme3.py

@@ -4,7 +4,7 @@ from collections import *
 # This is expected to fail with -builtin option
 # Builtin types can't inherit from pure-python abstract bases
 if is_python_builtin():
-  exit(0)
+    exit(0)
 
 assert issubclass(Mapii, MutableMapping)
 assert issubclass(Multimapii, MutableMapping)
@@ -19,4 +19,3 @@ intset = IntSet()
 intmultiset = IntMultiset()
 intvector = IntVector()
 intlist = IntList()
-