3 files changed, 23 insertions, 14 deletions
diff --git a/rest_framework/utils/encoders.py b/rest_framework/utils/encoders.py
index c125ac8a..00ffdfba 100644
--- a/rest_framework/utils/encoders.py
+++ b/rest_framework/utils/encoders.py
@@ -98,14 +98,23 @@ else:
                     node.flow_style = best_style
             return node
 
-    SafeDumper.add_representer(decimal.Decimal,
-            SafeDumper.represent_decimal)
-
-    SafeDumper.add_representer(SortedDict,
-            yaml.representer.SafeRepresenter.represent_dict)
-    SafeDumper.add_representer(DictWithMetadata,
-            yaml.representer.SafeRepresenter.represent_dict)
-    SafeDumper.add_representer(SortedDictWithMetadata,
-            yaml.representer.SafeRepresenter.represent_dict)
-    SafeDumper.add_representer(types.GeneratorType,
-            yaml.representer.SafeRepresenter.represent_list)
+    SafeDumper.add_representer(
+        decimal.Decimal,
+        SafeDumper.represent_decimal
+    )
+    SafeDumper.add_representer(
+        SortedDict,
+        yaml.representer.SafeRepresenter.represent_dict
+    )
+    SafeDumper.add_representer(
+        DictWithMetadata,
+        yaml.representer.SafeRepresenter.represent_dict
+    )
+    SafeDumper.add_representer(
+        SortedDictWithMetadata,
+        yaml.representer.SafeRepresenter.represent_dict
+    )
+    SafeDumper.add_representer(
+        types.GeneratorType,
+        yaml.representer.SafeRepresenter.represent_list
+    )
diff --git a/rest_framework/utils/formatting.py b/rest_framework/utils/formatting.py
index 4b59ba84..6d53aed1 100644
--- a/rest_framework/utils/formatting.py
+++ b/rest_framework/utils/formatting.py
@@ -6,8 +6,6 @@ from __future__ import unicode_literals
 from django.utils.html import escape
 from django.utils.safestring import mark_safe
 from rest_framework.compat import apply_markdown
-from rest_framework.settings import api_settings
-from textwrap import dedent
 import re
 
 
@@ -40,6 +38,7 @@ def dedent(content):
 
     return content.strip()
 
+
 def camelcase_to_spaces(content):
     """
     Translate 'CamelCaseNames' to 'Camel Case Names'.
@@ -49,6 +48,7 @@ def camelcase_to_spaces(content):
     content = re.sub(camelcase_boundry, ' \\1', content).strip()
     return ' '.join(content.split('_')).title()
 
+
 def markup_description(description):
     """
     Apply HTML markup to the given description.
diff --git a/rest_framework/utils/mediatypes.py b/rest_framework/utils/mediatypes.py
index 92f99efd..727f9c19 100644
--- a/rest_framework/utils/mediatypes.py
+++ b/rest_framework/utils/mediatypes.py
@@ -57,7 +57,7 @@ class _MediaType(object):
             if key != 'q' and other.params.get(key, None) != self.params.get(key, None):
                 return False
 
-        if self.sub_type != '*' and other.sub_type != '*'  and other.sub_type != self.sub_type:
+        if self.sub_type != '*' and other.sub_type != '*' and other.sub_type != self.sub_type:
             return False
 
         if self.main_type != '*' and other.main_type != '*' and other.main_type != self.main_type: