Resolve "evaluate uv"

bottle-docker/app/src/userDAO.py

@@ -1,6 +1,5 @@
 # -*- coding: utf-8 -*-
 
-import hmac
 import random
 import string
 import hashlib
@@ -29,7 +28,7 @@ class UserDAO:
 
     def make_pw_hash(self, pw,salt=None):
         if salt == None:
-            salt = self.make_salt();
+            salt = self.make_salt()
         return hashlib.sha256(pw + salt).hexdigest()+","+ salt
 
     # Validates a user login. Returns user record or None
@@ -68,7 +67,7 @@ class UserDAO:
         except pymongo.errors.OperationFailure:
             print("oops, mongo error")
             return False
-        except pymongo.errors.DuplicateKeyError as e:
+        except pymongo.errors.DuplicateKeyError:
             print("oops, username is already taken")
             return False