diff --git a/BaseTools/Source/Python/Common/Expression.py b/BaseTools/Source/Python/Common/Expression.py
index 4a7cd974b1..09240de697 100644
--- a/BaseTools/Source/Python/Common/Expression.py
+++ b/BaseTools/Source/Python/Common/Expression.py
@@ -899,7 +899,7 @@ class ValueExpressionEx(ValueExpression):
                         LabelDict = {}
                         NewPcdValueList = []
                         LabelOffset = 0
-                        for Index, Item in enumerate(PcdValueList):
+                        for Item in PcdValueList:
                             # compute byte offset of every LABEL
                             LabelList = _ReLabel.findall(Item)
                             Item = _ReLabel.sub('', Item)
@@ -925,7 +925,7 @@ class ValueExpressionEx(ValueExpression):
                                 except:
                                     LabelOffset = LabelOffset + 1
 
-                        for Index, Item in enumerate(PcdValueList):
+                        for Item in PcdValueList:
                             # for LABEL parse
                             Item = Item.strip()
                             try:
diff --git a/BaseTools/Source/Python/Common/Misc.py b/BaseTools/Source/Python/Common/Misc.py
index 7d44fdcf8b..8f479ace4c 100644
--- a/BaseTools/Source/Python/Common/Misc.py
+++ b/BaseTools/Source/Python/Common/Misc.py
@@ -76,7 +76,7 @@ def GetVariableOffset(mapfilepath, efifilepath, varnames):
 def _parseForXcode(lines, efifilepath, varnames):
     status = 0
     ret = []
-    for index, line in enumerate(lines):
+    for line in lines:
         line = line.strip()
         if status == 0 and line == "# Symbols:":
             status = 1
diff --git a/BaseTools/Source/Python/GenPatchPcdTable/GenPatchPcdTable.py b/BaseTools/Source/Python/GenPatchPcdTable/GenPatchPcdTable.py
index fdad5a44dc..d30a9a2baa 100644
--- a/BaseTools/Source/Python/GenPatchPcdTable/GenPatchPcdTable.py
+++ b/BaseTools/Source/Python/GenPatchPcdTable/GenPatchPcdTable.py
@@ -5,7 +5,7 @@
 #    PCD Name    Offset in binary
 #    ========    ================
 #
-# Copyright (c) 2008 - 2017, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2008 - 2018, Intel Corporation. All rights reserved.<BR>
 # This program and the accompanying materials
 # are licensed and made available under the terms and conditions of the BSD License
 # which accompanies this distribution.  The full text of the license may be found at
@@ -65,7 +65,7 @@ def parsePcdInfoFromMapFile(mapfilepath, efifilepath):
 def _parseForXcode(lines, efifilepath):
     status = 0
     pcds = []
-    for index, line in enumerate(lines):
+    for line in lines:
         line = line.strip()
         if status == 0 and line == "# Symbols:":
             status = 1