Fix OptBucket for Python 2.6

1 files changed, 3 insertions, 2 deletions

diff --git a/nose/sphinx/pluginopts.py b/nose/sphinx/pluginopts.py
index 4960b92..2f6e895 100644
--- a/nose/sphinx/pluginopts.py
+++ b/nose/sphinx/pluginopts.py
@@ -157,8 +157,9 @@ class OptBucket(object):
         return self.doc.replace('%prog', self.prog).replace(':\n', '::\n')
     
     def add_option(self, *arg, **kw):
-        kw = {k: (v.replace('\\', '\\\\') if isinstance(v, str) else v)
-              for (k, v) in kw.items()}
+        for k, v in kw.items():
+            if isinstance(v, str):
+                kw[k] = v.replace('\\', '\\\\')
         self.opts.append(Opt(*arg, **kw))