Fix py2 builds

pydata · Jul 16, 2014 · 6c5fcf9 · 6c5fcf9
1 parent d22d502
commit 6c5fcf9
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/patsy/build.py b/patsy/build.py
@@ -782,7 +782,7 @@ def subset(self, which_terms):
         evaluators = set()
         term_to_column_builders = {}
         for term_or_name in which_terms:
-            if isinstance(term_or_name, str):
+            if isinstance(term_or_name, six.string_types):
                 if term_or_name not in term_name_to_term:
                     raise PatsyError("requested term %r not found in "
                                      "this DesignMatrixBuilder"