Fix 2.6 compat

rest_framework/compat.py

@@ -426,3 +426,12 @@ try:
     from xml.etree import ParseError as ETParseError
 except ImportError:  # python < 2.7
     ETParseError = None
+
+
+# XMLParser only takes an encoding arg from >= 2.7
+def ET_XMLParser(encoding=None):
+    from xml.etree import ElementTree as ET
+    try:
+        return ET.XMLParser(encoding=encoding)
+    except TypeError:
+        return ET.XMLParser()

rest_framework/parsers.py

@@ -9,7 +9,7 @@ from django.conf import settings
 from django.http import QueryDict
 from django.http.multipartparser import MultiPartParser as DjangoMultiPartParser
 from django.http.multipartparser import MultiPartParserError
-from rest_framework.compat import yaml, ETParseError
+from rest_framework.compat import yaml, ETParseError, ET_XMLParser
 from rest_framework.exceptions import ParseError
 from rest_framework.compat import six
 from xml.etree import ElementTree as ET
@@ -148,7 +148,7 @@ class XMLParser(BaseParser):
     def parse(self, stream, media_type=None, parser_context=None):
         parser_context = parser_context or {}
         encoding = parser_context.get('encoding', settings.DEFAULT_CHARSET)
-        parser = ET.XMLParser(encoding=encoding)
+        parser = ET_XMLParser(encoding=encoding)
         try:
             tree = ET.parse(stream, parser=parser)
         except (ExpatError, ETParseError, ValueError) as exc:

rest_framework/serializers.py

@@ -165,6 +165,11 @@ class BaseSerializer(Field):
 
         # Remove anything in 'exclude'
         if self.opts.exclude:
+            # Note: To be deprecated in line with Django's ModelForm change.
+            # https://code.djangoproject.com/ticket/19733
+            warnings.warn('`exclude` option on serializers is due to be deprecated. '
+                          'Use the `fields` option instead.',
+                           PendingDeprecationWarning, stacklevel=2)
             for key in self.opts.exclude:
                 ret.pop(key, None)