use StringTypes instead of str when determining the type

diff --git a/sfa/util/rspec.py b/sfa/util/rspec.py
index 515dd86..c030171 100644 (file)
--- a/sfa/util/rspec.py
+++ b/sfa/util/rspec.py
@@ -27,10 +27,10 @@ class RSpec:
         self.dict = {}
         self.schemaDict = {}
         self.NSURL = NSURL 
-        if xml: 
+        if xml:
             if type(xml) == file:
                 self.parseFile(xml)
-            if type(xml) == str:
+            if type(xml) in StringTypes:
                 self.parseString(xml)
             self.dict = self.toDict() 
         if xsd: