Try both ideas for python3

cdunn2001 · cdunn2001 · commit 40abadd26845 · 2017-09-11T13:42:51.000-05:00
diff --git a/.travis.yml b/.travis.yml
@@ -39,6 +39,7 @@ addons:
     - g++-4.9
     - clang-3.5
     - valgrind
+    - python3
 os:
   - linux
 language: cpp
