Added exception checking for pickle format conversion

talon/signature/bruteforce.py

@@ -110,7 +110,7 @@ def extract_signature(msg_body):
 
             return (stripped_body.strip(),
                     signature.strip())
-    except Exception as e:
+    except Exception:
         log.exception('ERROR extracting signature')
         return (msg_body, None)
 

talon/signature/learning/classifier.py

@@ -35,11 +35,16 @@ def load(saved_classifier_filename, train_data_filename):
     try:
         return joblib.load(saved_classifier_filename)
     except ValueError:
+        # load python 2 pickle format with python 3, and save it permissions allowing
         import sys
         kwargs = {}
         if sys.version_info > (3, 0):
             kwargs["encoding"] = "latin1"
 
         loaded = pickle.load(open(saved_classifier_filename, 'rb'), **kwargs)
+        try:
             joblib.dump(loaded, saved_classifier_filename, compress=True)
+        except Exception:
+            pass
+
         return joblib.load(saved_classifier_filename)