diff --git a/lib/core/shell.py b/lib/core/shell.py
index 1e7f35d50..7b53bc389 100644
--- a/lib/core/shell.py
+++ b/lib/core/shell.py
@@ -10,7 +10,6 @@ import os
 import rlcompleter
 
 from lib.core import readlineng as readline
-from lib.core.common import Backend
 from lib.core.data import logger
 from lib.core.data import paths
 from lib.core.enums import AUTOCOMPLETE_TYPE
diff --git a/lib/parse/configfile.py b/lib/parse/configfile.py
index 507cce17b..dbbc5ad78 100644
--- a/lib/parse/configfile.py
+++ b/lib/parse/configfile.py
@@ -5,11 +5,6 @@ Copyright (c) 2006-2015 sqlmap developers (http://sqlmap.org/)
 See the file 'doc/COPYING' for copying permission
 """
 
-import codecs
-
-from ConfigParser import MissingSectionHeaderError
-from ConfigParser import ParsingError
-
 from lib.core.common import checkFile
 from lib.core.common import getUnicode
 from lib.core.common import openFile
@@ -20,7 +15,6 @@ from lib.core.data import logger
 from lib.core.exception import SqlmapMissingMandatoryOptionException
 from lib.core.exception import SqlmapSyntaxException
 from lib.core.optiondict import optDict
-from lib.core.settings import UNICODE_ENCODING
 
 config = None
 
diff --git a/lib/takeover/web.py b/lib/takeover/web.py
index 40a403dc0..504fb4a2c 100644
--- a/lib/takeover/web.py
+++ b/lib/takeover/web.py
@@ -205,7 +205,6 @@ class Web:
         backdoorContent = decloak(os.path.join(paths.SQLMAP_SHELL_PATH, "backdoor.%s_" % self.webApi))
 
         stagerContent = decloak(os.path.join(paths.SQLMAP_SHELL_PATH, "stager.%s_" % self.webApi))
-        success = False
 
         for directory in directories:
             if not directory:
@@ -357,6 +356,4 @@ class Web:
             infoMsg += self.webBackdoorUrl
             logger.info(infoMsg)
 
-            success = True
-
             break
diff --git a/lib/utils/api.py b/lib/utils/api.py
index 1db28e7cd..4b63fbfe6 100644
--- a/lib/utils/api.py
+++ b/lib/utils/api.py
@@ -13,8 +13,6 @@ import sys
 import tempfile
 import time
 
-from subprocess import PIPE
-
 from lib.core.common import unArrayizeValue
 from lib.core.convert import base64pickle
 from lib.core.convert import hexencode
diff --git a/lib/utils/hash.py b/lib/utils/hash.py
index 87ae8d411..81af27026 100644
--- a/lib/utils/hash.py
+++ b/lib/utils/hash.py
@@ -44,7 +44,6 @@ from lib.core.common import clearConsoleLine
 from lib.core.common import dataToStdout
 from lib.core.common import getFileItems
 from lib.core.common import getPublicTypeMembers
-from lib.core.common import getUnicode
 from lib.core.common import hashDBRetrieve
 from lib.core.common import hashDBWrite
 from lib.core.common import normalizeUnicode
diff --git a/plugins/dbms/postgresql/filesystem.py b/plugins/dbms/postgresql/filesystem.py
index 72cf7c75f..bfa285091 100644
--- a/plugins/dbms/postgresql/filesystem.py
+++ b/plugins/dbms/postgresql/filesystem.py
@@ -8,7 +8,6 @@ See the file 'doc/COPYING' for copying permission
 import os
 
 from lib.core.common import randomInt
-from lib.core.data import kb
 from lib.core.data import logger
 from lib.core.exception import SqlmapUnsupportedFeatureException
 from lib.core.settings import LOBLKSIZE
diff --git a/plugins/generic/filesystem.py b/plugins/generic/filesystem.py
index 0aaae5b83..21b698b4e 100644
--- a/plugins/generic/filesystem.py
+++ b/plugins/generic/filesystem.py
@@ -20,7 +20,6 @@ from lib.core.common import isListLike
 from lib.core.common import isStackingAvailable
 from lib.core.common import isTechniqueAvailable
 from lib.core.common import readInput
-from lib.core.common import unArrayizeValue
 from lib.core.data import conf
 from lib.core.data import kb
 from lib.core.data import logger