diff --git a/_sqlmap.py b/_sqlmap.py
index 8ab4272c4..d8b81a1a1 100755
--- a/_sqlmap.py
+++ b/_sqlmap.py
@@ -6,7 +6,6 @@ See the file 'doc/COPYING' for copying permission
 """
 
 import bdb
-import logging
 import os
 import sys
 import time
@@ -29,7 +28,6 @@ from lib.core.data import logger
 from lib.core.data import paths
 from lib.core.common import unhandledExceptionMessage
 from lib.core.exception import exceptionsTuple
-from lib.core.exception import SqlmapMissingDependence
 from lib.core.exception import SqlmapSilentQuitException
 from lib.core.exception import SqlmapUserQuitException
 from lib.core.option import init
diff --git a/lib/controller/action.py b/lib/controller/action.py
index a3cecf176..09834b48a 100644
--- a/lib/controller/action.py
+++ b/lib/controller/action.py
@@ -8,7 +8,6 @@ See the file 'doc/COPYING' for copying permission
 from lib.controller.handler import setHandler
 from lib.core.common import Backend
 from lib.core.common import Format
-from lib.core.common import dataToStdout
 from lib.core.data import conf
 from lib.core.data import kb
 from lib.core.data import logger
diff --git a/lib/techniques/error/use.py b/lib/techniques/error/use.py
index 337a700b9..0b781e395 100644
--- a/lib/techniques/error/use.py
+++ b/lib/techniques/error/use.py
@@ -236,7 +236,6 @@ def errorUse(expression, dump=False):
     start = time.time()
     startLimit = 0
     stopLimit = None
-    output = None
     value = None
 
     _, _, _, _, _, expressionFieldsList, expressionFields, _ = agent.getFields(expression)
diff --git a/lib/utils/hash.py b/lib/utils/hash.py
index e19c91a34..686ff43a5 100644
--- a/lib/utils/hash.py
+++ b/lib/utils/hash.py
@@ -500,7 +500,7 @@ def _bruteProcessVariantA(attack_info, hash_regex, suffix, retVal, proc_id, proc
             except (UnicodeEncodeError, UnicodeDecodeError):
                 pass # ignore possible encoding problems caused by some words in custom dictionaries
 
-            except Exception, e:
+            except Exception:
                 warnMsg = "there was a problem while hashing entry: %s. " % repr(word)
                 warnMsg += "Please report by e-mail to %s" % ML
                 logger.critical(warnMsg)