+# Config file for automatic testing at travis-ci.org
+
+# Only test master and pull requests; skip tags.
+# Other branches can allow themselves.
+branches:
+ only:
+ - master
+
+# Prefer docker containers
+sudo: required
+
+language: python
+
+python:
+ - "2.7"
+
+cache: pip
+
+matrix:
+ include:
+ - python: "2.7"
+ env: TOXENV=py27
+ - python: "3.3"
+ env: TOXENV=py33
+ - python: "3.4"
+ env: TOXENV=py34
+ - python: "3.5"
+ env: TOXENV=py35
+ - python: "3.6"
+ env: TOXENV=py36
+ - python: "pypy"
+ env: TOXENV=pypy
+
+install:
+ - travis_retry pip install tox
+
+script:
+ - tox
+
+before_cache:
+ - scripts/remove-old-files.py -o 180 ~/.cache/pip