fixes this issue

aneda · aneda · commit e564a156c889 · 2015-07-16T18:13:34.000-04:00
```
======================================================================
ERROR: Failure: TypeError (__init__() takes exactly 1 argument (2
given))
----------------------------------------------------------------------
Traceback (most recent call last):
 File "/usr/local/lib/python2.7/site-packages/nose/loader.py", line
523, in makeTest
   return self._makeTest(obj, parent)
 File "/usr/local/lib/python2.7/site-packages/nose/loader.py", line
570, in _makeTest
   return self.loadTestsFromTestCase(obj)
 File "/usr/local/lib/python2.7/site-packages/nose/loader.py", line
494, in loadTestsFromTestCase
   return super(TestLoader, self).loadTestsFromTestCase(testCaseClass)
 File
"/usr/local/Cellar/python/2.7.10/Frameworks/Python.framework/Versions/2.
7/lib/python2.7/unittest/loader.py", line 56, in loadTestsFromTestCase
   loaded_suite = self.suiteClass(map(testCaseClass, testCaseNames))
TypeError: __init__() takes exactly 1 argument (2 given)
```
diff --git a/plotly/tests/utils.py b/plotly/tests/utils.py
@@ -11,11 +11,11 @@ class PlotlyTestCase(TestCase):
 
     # parent test case to assist with clean up of local credentials/config
 
-    def __init__(self, **kwargs):
+    def __init__(self, *args, **kwargs):
         self._file_credentials = None
         self._file_config = None
         self._session = None
-        super(PlotlyTestCase, self).__init__(**kwargs)
+        super(PlotlyTestCase, self).__init__(*args, **kwargs)
 
     def setUp(self):
         self.stash_file_credentials_and_config()
