python 2.x/3.x string support

himports/dolibarrAlchemyHledger.py

@@ -152,7 +152,7 @@ class HledgerBankEntry(HledgerEntry):
             for fn in fns:
                 try:
                     third_code = fn(e)
-                    if third_code is None or not isinstance(third_code, str):
+                    if third_code is None or not isinstance(third_code, basestring):
                         third_code = ""
                 except:
                     third_code = ""