Style issue fixes

codejail/tests/test_json_safe.py

-""" Test JSON serialization straw """
+"""
+Test JSON serialization straw
+"""
 
 import unittest
 from codejail.safe_exec import json_safe
 
+
 class JsonSafeTest(unittest.TestCase):
-    """ Test JSON serialization straw """
+    """
+    Test JSON serialization straw
+    """
 
     # Unicode surrogate values
     SURROGATE_RANGE = range(55296, 57344)
 
     def test_unicode(self):
-        """ Test that json_safe() handles non-surrogate unicode values """
+        """
+        Test that json_safe() handles non-surrogate unicode values
+        """
 
         # Try a few non-ascii UTF-16 characters
         for unicode_char in [unichr(512), unichr(2**8-1), unichr(2**16-1)]:
@@ -24,7 +31,9 @@ class JsonSafeTest(unittest.TestCase):
             self.assertEqual(result.get(unicode_char, None), 'test')
 
     def test_surrogate_unicode_values(self):
-        """ Test that json_safe() excludes surrogate unicode values """
+        """
+        Test that json_safe() excludes surrogate unicode values
+        """
 
         # Try surrogate unicode values
         for code in self.SURROGATE_RANGE:
@@ -36,7 +45,9 @@ class JsonSafeTest(unittest.TestCase):
             self.assertFalse('test' in result)
 
     def test_surrogate_unicode_keys(self):
-        """ Test that json_safe() excludes surrogate unicode keys """
+        """
+        Test that json_safe() excludes surrogate unicode keys
+        """
 
         # Try surrogate unicode values
         for code in self.SURROGATE_RANGE: