Only check format for python files.

tianhao64 · web-flow · commit 11bb1dc40b44 · 2017-12-05T16:00:43.000-08:00
diff --git a/.travis.yml b/.travis.yml
@@ -8,4 +8,4 @@ install:
   - pip install -r test-requirements.txt
   - pip install pycodestyle
 # command to run tests
-script: pycodestyle samples/*
+script: pycodestyle samples/py.*
