if/else ternary operator is 2.5+. let's be more compatible than that.

Author: mmalone

oauth2/__init__.py

@@ -29,7 +29,6 @@
 import hmac
 import binascii
 import httplib2
-from types import ListType
 
 try:
     from urlparse import parse_qs, parse_qsl
@@ -328,9 +327,17 @@ def get_parameter(self, parameter):
 
     def get_normalized_parameters(self):
         """Return a string that contains the parameters that must be signed."""
-        # 1.0a/9.1.1 states that kvp must be sorted by key, then by value
-        items = [(k, v if type(v) != ListType else sorted(v)) for k,v in sorted(self.items()) if k != 'oauth_signature']
-        encoded_str = urllib.urlencode(items, True)
+        items = []
+        for key, value in self.iteritems():
+            if key == 'oauth_signature':
+                continue
+            # 1.0a/9.1.1 states that kvp must be sorted by key, then by value,
+            # so we unpack sequence values into multiple items for sorting.
+            if hasattr(value, '__iter__'):
+                items.extend((key, item) for item in value)
+            else:
+                items.append((key, value))
+        encoded_str = urllib.urlencode(sorted(items))
         # Encode signature parameters per Oauth Core 1.0 protocol
         # spec draft 7, section 3.6
         # (http://tools.ietf.org/html/draft-hammer-oauth-07#section-3.6)