example and travis

.gitignore

@@ -0,0 +1,2 @@
+.pytest_cache
+__pycache__

.travis.yml

@@ -0,0 +1,28 @@
+sudo: false
+
+language:
+  - python
+
+python:
+  - 2.6
+  - 2.7
+  - 3.4
+  - 3.5
+
+install:
+  - pip install pytest pytest-cov python-coveralls
+
+script:
+  - if [[ $TRAVIS_PYTHON_VERSION == 2.7 ]];
+    then py.test -vv example.py --cov example;
+    else py.test -vv example.py;
+    fi
+
+after_success:
+  - if [[ $TRAVIS_PYTHON_VERSION == 2.7 ]];
+    then coveralls;
+    fi
+
+notifications:
+  email: false
+

example.py

@@ -0,0 +1,37 @@
+def reverse_words(s):
+    """
+    Reverses order or words in string s.
+    """
+    words = s.split()
+    words_reversed = words[::-1]
+    return ' '.join(words_reversed)
+
+
+def test_reverse_words():
+    assert reverse_words('dogs hate cats') == 'cats hate dogs'
+    assert reverse_words('dog eat dog') == 'dog eat dog'
+    assert reverse_words('one two three four') == 'four three two one'
+
+
+def get_word_lengths(s):
+    """
+    Returns a list of integers representing
+    the word lengths in string s.
+    """
+    # uncomment next line in step 9
+#   return [len(word) for word in s.split()]
+    return None
+
+
+# uncomment this function in step 6
+#def test_get_word_lengths():
+#    text = "Three tomatoes are walking down the street"
+#    assert get_word_lengths(text) == [5, 8, 3, 7, 4, 3, 6]
+
+
+def obscure_function():
+    """
+    Example of a function that is never tested.
+    """
+    do_something_strange()
+