Support for client credentials flow

README.md

@@ -66,3 +66,4 @@ If you have suggestions, bugs or other issues specific to this library, file the
 - v2.2.0 - November 15, 2014 -- Added support for user_playlist_tracks
 - v2.3.0 - January 5, 2015 -- Added session support added by akx. 
 - v2.3.2 - March 31, 2015 -- Added auto retry logic
+- v2.3.3 - April 1, 2015 -- added client credential flow

setup.py

@@ -2,7 +2,7 @@ from setuptools import setup
 
 setup(
     name='spotipy',
-    version='2.3.2',
+    version='2.3.3',
     description='simple client for the Spotify Web API',
     author="@plamere",
     author_email="paul@echonest.com",

tests/tests.py

@@ -118,7 +118,7 @@ class TestSpotipy(unittest.TestCase):
     def test_unauthenticated_post_fails(self):
         with self.assertRaises(SpotifyException) as cm:
             self.spotify.user_playlist_create("spotify", "Best hits of the 90s")
-        self.assertEqual(cm.exception.http_status, 403)
+        self.assertEqual(cm.exception.http_status, 401)
 
     def test_custom_requests_session(self):
         from requests import Session