diff --git a/lib/controller/checks.py b/lib/controller/checks.py
index 4c1e14c7e..7840bf162 100644
--- a/lib/controller/checks.py
+++ b/lib/controller/checks.py
@@ -15,7 +15,6 @@ from subprocess import Popen as execute
 
 from extra.beep.beep import beep
 from lib.core.agent import agent
-from lib.core.common import arrayizeValue
 from lib.core.common import Backend
 from lib.core.common import extractRegexResult
 from lib.core.common import extractTextTagContent
@@ -46,7 +45,6 @@ from lib.core.datatype import AttribDict
 from lib.core.datatype import InjectionDict
 from lib.core.decorators import cachedmethod
 from lib.core.dicts import FROM_DUMMY_TABLE
-from lib.core.enums import CUSTOM_LOGGING
 from lib.core.enums import DBMS
 from lib.core.enums import HEURISTIC_TEST
 from lib.core.enums import HTTP_HEADER
@@ -66,7 +64,6 @@ from lib.core.settings import HEURISTIC_CHECK_ALPHABET
 from lib.core.settings import SUHOSIN_MAX_VALUE_LENGTH
 from lib.core.settings import SUPPORTED_DBMS
 from lib.core.settings import URI_HTTP_HEADER
-from lib.core.settings import LOWER_RATIO_BOUND
 from lib.core.settings import UPPER_RATIO_BOUND
 from lib.core.settings import IDS_WAF_CHECK_PAYLOAD
 from lib.core.settings import IDS_WAF_CHECK_RATIO
diff --git a/lib/core/common.py b/lib/core/common.py
index 16a377ea2..6c5099d67 100755
--- a/lib/core/common.py
+++ b/lib/core/common.py
@@ -97,7 +97,6 @@ from lib.core.settings import DBMS_DIRECTORY_DICT
 from lib.core.settings import DEFAULT_COOKIE_DELIMITER
 from lib.core.settings import DEFAULT_GET_POST_DELIMITER
 from lib.core.settings import DEFAULT_MSSQL_SCHEMA
-from lib.core.settings import DESCRIPTION
 from lib.core.settings import DUMMY_USER_INJECTION
 from lib.core.settings import DYNAMICITY_MARK_LENGTH
 from lib.core.settings import ERROR_PARSING_REGEXES
@@ -134,9 +133,7 @@ from lib.core.settings import REFLECTED_MAX_REGEX_PARTS
 from lib.core.settings import REFLECTED_REPLACEMENT_REGEX
 from lib.core.settings import REFLECTED_VALUE_MARKER
 from lib.core.settings import REFLECTIVE_MISS_THRESHOLD
-from lib.core.settings import REVISION
 from lib.core.settings import SENSITIVE_DATA_REGEX
-from lib.core.settings import SITE
 from lib.core.settings import SUPPORTED_DBMS
 from lib.core.settings import TEXT_TAG_REGEX
 from lib.core.settings import TIME_STDEV_COEFF
@@ -146,7 +143,6 @@ from lib.core.settings import URI_QUESTION_MARKER
 from lib.core.settings import URLENCODE_CHAR_LIMIT
 from lib.core.settings import URLENCODE_FAILSAFE_CHARS
 from lib.core.settings import USER_AGENT_ALIASES
-from lib.core.settings import VERSION
 from lib.core.settings import VERSION_STRING
 from lib.core.threads import getCurrentThreadData
 from lib.utils.sqlalchemy import _sqlalchemy
@@ -1027,7 +1023,7 @@ def checkFile(filename):
 
     if valid:
         try:
-            with open(filename, "rb") as f:
+            with open(filename, "rb"):
                 pass
         except:
             valid = False
diff --git a/lib/core/dump.py b/lib/core/dump.py
index c6272e4d3..d3b9cc799 100644
--- a/lib/core/dump.py
+++ b/lib/core/dump.py
@@ -6,7 +6,6 @@ See the file 'doc/COPYING' for copying permission
 """
 
 import cgi
-import codecs
 import hashlib
 import os
 import re
@@ -22,7 +21,6 @@ from lib.core.common import normalizeUnicode
 from lib.core.common import openFile
 from lib.core.common import prioritySortColumns
 from lib.core.common import randomInt
-from lib.core.common import randomStr
 from lib.core.common import safeCSValue
 from lib.core.common import unicodeencode
 from lib.core.common import unsafeSQLIdentificatorNaming
diff --git a/lib/core/option.py b/lib/core/option.py
index 97f211e17..33345c57b 100644
--- a/lib/core/option.py
+++ b/lib/core/option.py
@@ -53,7 +53,6 @@ from lib.core.common import readInput
 from lib.core.common import resetCookieJar
 from lib.core.common import runningAsAdmin
 from lib.core.common import safeExpandUser
-from lib.core.common import sanitizeStr
 from lib.core.common import setOptimize
 from lib.core.common import setPaths
 from lib.core.common import singleTimeWarnMessage
diff --git a/lib/core/settings.py b/lib/core/settings.py
index 62da62fd2..a356390d9 100644
--- a/lib/core/settings.py
+++ b/lib/core/settings.py
@@ -6,7 +6,6 @@ See the file 'doc/COPYING' for copying permission
 """
 
 import os
-import random
 import re
 import subprocess
 import string
diff --git a/lib/core/shell.py b/lib/core/shell.py
index d4ca035e0..1e7f35d50 100644
--- a/lib/core/shell.py
+++ b/lib/core/shell.py
@@ -43,7 +43,7 @@ def saveHistory(completion=None):
         historyPath = paths.SQLMAP_SHELL_HISTORY
 
     try:
-        with open(historyPath, "w+") as f:
+        with open(historyPath, "w+"):
             pass
     except:
         pass
@@ -92,7 +92,7 @@ class CompleterNG(rlcompleter.Completer):
                     matches.append(word)
 
         return matches
-        
+
 def autoCompletion(completion=None, os=None, commands=None):
     if not readlineAvailable():
         return
diff --git a/lib/parse/payloads.py b/lib/parse/payloads.py
index c98a7f014..a96867082 100644
--- a/lib/parse/payloads.py
+++ b/lib/parse/payloads.py
@@ -10,7 +10,6 @@ import os
 from xml.etree import ElementTree as et
 
 from lib.core.data import conf
-from lib.core.data import logger
 from lib.core.data import paths
 from lib.core.datatype import AttribDict
 from lib.core.exception import SqlmapInstallationException
@@ -89,8 +88,6 @@ def loadPayloads():
     for payloadFile in payloadFiles:
         payloadFilePath = os.path.join(paths.SQLMAP_XML_PAYLOADS_PATH, payloadFile)
 
-        #logger.debug("Parsing payloads from file '%s'" % payloadFile)
-
         try:
             doc = et.parse(payloadFilePath)
         except Exception, ex:
diff --git a/lib/request/connect.py b/lib/request/connect.py
index 94d1e4576..94ce9887e 100644
--- a/lib/request/connect.py
+++ b/lib/request/connect.py
@@ -822,7 +822,6 @@ class Connect(object):
                 retVal = paramString
                 match = re.search("%s=(?P<value>[^&]*)" % re.escape(parameter), paramString)
                 if match:
-                    origValue = match.group("value")
                     retVal = re.sub("%s=[^&]*" % re.escape(parameter), "%s=%s" % (parameter, newValue), paramString)
                 return retVal
 
diff --git a/lib/request/httpshandler.py b/lib/request/httpshandler.py
index bbd291e15..6906f4686 100644
--- a/lib/request/httpshandler.py
+++ b/lib/request/httpshandler.py
@@ -7,7 +7,6 @@ See the file 'doc/COPYING' for copying permission
 
 import httplib
 import socket
-import sys
 import urllib2
 
 from lib.core.data import kb
diff --git a/lib/utils/api.py b/lib/utils/api.py
index 357d4d3b5..c007289b5 100644
--- a/lib/utils/api.py
+++ b/lib/utils/api.py
@@ -8,7 +8,6 @@ See the file 'doc/COPYING' for copying permission
 
 import logging
 import os
-import shutil
 import sqlite3
 import sys
 import tempfile
diff --git a/lib/utils/crawler.py b/lib/utils/crawler.py
index ffac14e13..be47608e1 100644
--- a/lib/utils/crawler.py
+++ b/lib/utils/crawler.py
@@ -5,7 +5,6 @@ Copyright (c) 2006-2015 sqlmap developers (http://sqlmap.org/)
 See the file 'doc/COPYING' for copying permission
 """
 
-import codecs
 import httplib
 import os
 import re
@@ -19,13 +18,11 @@ from lib.core.common import findPageForms
 from lib.core.common import openFile
 from lib.core.common import readInput
 from lib.core.common import safeCSValue
-from lib.core.common import singleTimeWarnMessage
 from lib.core.data import conf
 from lib.core.data import kb
 from lib.core.data import logger
 from lib.core.exception import SqlmapConnectionException
 from lib.core.settings import CRAWL_EXCLUDE_EXTENSIONS
-from lib.core.settings import UNICODE_ENCODING
 from lib.core.threads import getCurrentThreadData
 from lib.core.threads import runThreads
 from lib.parse.sitemap import parseSitemap
diff --git a/lib/utils/hash.py b/lib/utils/hash.py
index bc3f06f2a..123b93ee7 100644
--- a/lib/utils/hash.py
+++ b/lib/utils/hash.py
@@ -59,7 +59,6 @@ from lib.core.data import kb
 from lib.core.data import logger
 from lib.core.enums import DBMS
 from lib.core.enums import HASH
-from lib.core.exception import SqlmapFilePathException
 from lib.core.exception import SqlmapUserQuitException
 from lib.core.settings import COMMON_PASSWORD_SUFFIXES
 from lib.core.settings import COMMON_USER_COLUMNS
diff --git a/lib/utils/sqlalchemy.py b/lib/utils/sqlalchemy.py
index 9e24bba30..1b654ef2f 100644
--- a/lib/utils/sqlalchemy.py
+++ b/lib/utils/sqlalchemy.py
@@ -8,7 +8,6 @@ See the file 'doc/COPYING' for copying permission
 import imp
 import logging
 import os
-import re
 import sys
 import warnings
 
diff --git a/plugins/dbms/mssqlserver/filesystem.py b/plugins/dbms/mssqlserver/filesystem.py
index eca533d01..53e197a0d 100644
--- a/plugins/dbms/mssqlserver/filesystem.py
+++ b/plugins/dbms/mssqlserver/filesystem.py
@@ -343,7 +343,6 @@ class Filesystem(GenericFilesystem):
         logger.info(infoMsg)
 
         chunkMaxSize = 500
-        dFileName = ntpath.basename(dFile)
 
         randFile = "tmpf%s.txt" % randomStr(lowercase=True)
         randFilePath = "%s\%s" % (tmpPath, randFile)
diff --git a/sqlmap.py b/sqlmap.py
index 81b3e756e..161aa6727 100755
--- a/sqlmap.py
+++ b/sqlmap.py
@@ -12,7 +12,6 @@ import os
 import re
 import shutil
 import sys
-import tempfile
 import time
 import traceback
 import warnings
@@ -28,7 +27,6 @@ from lib.core.common import createGithubIssue
 from lib.core.common import dataToStdout
 from lib.core.common import getUnicode
 from lib.core.common import maskSensitiveData
-from lib.core.common import setColor
 from lib.core.common import setPaths
 from lib.core.common import weAreFrozen
 from lib.core.data import cmdLineOptions
diff --git a/waf/360.py b/waf/360.py
index cc8b4c615..86c251c20 100644
--- a/waf/360.py
+++ b/waf/360.py
@@ -7,7 +7,6 @@ See the file 'doc/COPYING' for copying permission
 
 import re
 
-from lib.core.enums import HTTP_HEADER
 from lib.core.settings import WAF_ATTACK_VECTORS
 
 __product__ = "360 Web Application Firewall (360)"
diff --git a/waf/anquanbao.py b/waf/anquanbao.py
index 430ce942a..6842c8a35 100644
--- a/waf/anquanbao.py
+++ b/waf/anquanbao.py
@@ -7,7 +7,6 @@ See the file 'doc/COPYING' for copying permission
 
 import re
 
-from lib.core.enums import HTTP_HEADER
 from lib.core.settings import WAF_ATTACK_VECTORS
 
 __product__ = "Anquanbao Web Application Firewall (Anquanbao)"
diff --git a/waf/baidu.py b/waf/baidu.py
index fc9cc9d21..7a15feadb 100644
--- a/waf/baidu.py
+++ b/waf/baidu.py
@@ -7,7 +7,6 @@ See the file 'doc/COPYING' for copying permission
 
 import re
 
-from lib.core.enums import HTTP_HEADER
 from lib.core.settings import WAF_ATTACK_VECTORS
 
 __product__ = "Yunjiasu Web Application Firewall (Baidu)"
diff --git a/waf/safedog.py b/waf/safedog.py
index 63c7fdddd..31b706e18 100644
--- a/waf/safedog.py
+++ b/waf/safedog.py
@@ -7,7 +7,6 @@ See the file 'doc/COPYING' for copying permission
 
 import re
 
-from lib.core.enums import HTTP_HEADER
 from lib.core.settings import WAF_ATTACK_VECTORS
 
 __product__ = "Safedog Web Application Firewall (Safedog)"
diff --git a/waf/senginx.py b/waf/senginx.py
index a4bdb1bf2..15a4223f2 100644
--- a/waf/senginx.py
+++ b/waf/senginx.py
@@ -5,9 +5,6 @@ Copyright (c) 2006-2015 sqlmap developers (http://sqlmap.org/)
 See the file 'doc/COPYING' for copying permission
 """
 
-import re
-
-from lib.core.enums import HTTP_HEADER
 from lib.core.settings import WAF_ATTACK_VECTORS
 
 __product__ = "SEnginx (Neusoft Corporation)"