Fix versioning urls

docs/api-guide/versioning.md

@@ -3,7 +3,7 @@ source: versioning.py
 # Versioning
 
 > Versioning an interface is just a "polite" way to kill deployed clients.
-> 
+>
 > — [Roy Fielding][cite].
 
 API versioning allows you to alter behavior between different clients. REST framework provides for a number of different versioning schemes.
@@ -117,12 +117,12 @@ Your URL conf must include a pattern that matches the version with a `'version'`
 
     urlpatterns = [
         url(
-            r'^(?P<version>{v1,v2})/bookings/$',
+            r'^(?P<version>[v1|v2]+)/bookings/$',
             bookings_list,
             name='bookings-list'
         ),
         url(
-            r'^(?P<version>{v1,v2})/bookings/(?P<pk>[0-9]+)/$',
+            r'^(?P<version>[v1|v2]+)/bookings/(?P<pk>[0-9]+)/$',
             bookings_detail,
             name='bookings-detail'
         )

rest_framework/versioning.py

@@ -59,8 +59,8 @@ class URLPathVersioning(BaseVersioning):
     An example URL conf for two views that accept two different versions.
 
     urlpatterns = [
-        url(r'^(?P<version>{v1,v2})/users/$', users_list, name='users-list'),
-        url(r'^(?P<version>{v1,v2})/users/(?P<pk>[0-9]+)/$', users_detail, name='users-detail')
+        url(r'^(?P<version>[v1|v2]+)/users/$', users_list, name='users-list'),
+        url(r'^(?P<version>[v1|v2]+)/users/(?P<pk>[0-9]+)/$', users_detail, name='users-detail')
     ]
 
     GET /1.0/something/ HTTP/1.1

tests/test_versioning.py

@@ -128,7 +128,7 @@ class TestURLReversing(UsingURLPatterns, APITestCase):
     urlpatterns = [
         url(r'^v1/', include(included, namespace='v1')),
         url(r'^another/$', dummy_view, name='another'),
-        url(r'^(?P<version>[^/]+)/another/$', dummy_view, name='another'),
+        url(r'^(?P<version>[v1|v2]+)/another/$', dummy_view, name='another'),
     ]
 
     def test_reverse_unversioned(self):