4 files changed, 8 insertions, 8 deletions
diff --git a/BaseTools/Source/Python/Ecc/Check.py b/BaseTools/Source/Python/Ecc/Check.py
index 4561961141..160e803764 100644
--- a/BaseTools/Source/Python/Ecc/Check.py
+++ b/BaseTools/Source/Python/Ecc/Check.py
@@ -1092,7 +1092,7 @@ class Check(object):
             RecordSet = EccGlobalData.gDb.TblInf.Exec(SqlCommand)
             for Record in RecordSet:
                 Path = Record[1]
-                Path = Path.upper().replace('\X64', '').replace('\IA32', '').replace('\EBC', '').replace('\IPF', '').replace('\ARM', '')
+                Path = Path.upper().replace(r'\X64', '').replace(r'\IA32', '').replace(r'\EBC', '').replace(r'\IPF', '').replace(r'\ARM', '')
                 if Path in InfPathList:
                     if not EccGlobalData.gException.IsException(ERROR_META_DATA_FILE_CHECK_MODULE_FILE_NO_USE, Record[2]):
                         EccGlobalData.gDb.TblReport.Insert(ERROR_META_DATA_FILE_CHECK_MODULE_FILE_NO_USE, OtherMsg="The source file [%s] is existing in module directory but it is not described in INF file." % (Record[2]), BelongsToTable='File', BelongsToItem=Record[0])
diff --git a/BaseTools/Source/Python/Ecc/Configuration.py b/BaseTools/Source/Python/Ecc/Configuration.py
index d4aab1d131..9a9ca49eee 100644
--- a/BaseTools/Source/Python/Ecc/Configuration.py
+++ b/BaseTools/Source/Python/Ecc/Configuration.py
@@ -432,7 +432,7 @@ class Configuration(object):
 # test that our dict and out class still match in contents.
 #
 if __name__ == '__main__':
-    myconfig = Configuration("BaseTools\Source\Python\Ecc\config.ini")
+    myconfig = Configuration(r"BaseTools\Source\Python\Ecc\config.ini")
     for each in myconfig.__dict__:
         if each == "Filename":
             continue
diff --git a/BaseTools/Source/Python/Ecc/MetaFileWorkspace/MetaFileParser.py b/BaseTools/Source/Python/Ecc/MetaFileWorkspace/MetaFileParser.py
index 2d98ac5ead..2ef2847b1b 100644
--- a/BaseTools/Source/Python/Ecc/MetaFileWorkspace/MetaFileParser.py
+++ b/BaseTools/Source/Python/Ecc/MetaFileWorkspace/MetaFileParser.py
@@ -1841,14 +1841,14 @@ class DecParser(MetaFileParser):
 
         if EccGlobalData.gConfig.UniCheckPCDInfo == '1' or EccGlobalData.gConfig.UniCheckAll == '1' or EccGlobalData.gConfig.CheckAll == '1':
             # check Description, Prompt information
-            PatternDesc = re.compile('##\s*([\x21-\x7E\s]*)', re.S)
-            PatternPrompt = re.compile('#\s+@Prompt\s+([\x21-\x7E\s]*)', re.S)
+            PatternDesc = re.compile(r'##\s*([\x21-\x7E\s]*)', re.S)
+            PatternPrompt = re.compile(r'#\s+@Prompt\s+([\x21-\x7E\s]*)', re.S)
             Description = None
             Prompt = None
             # check @ValidRange, @ValidList and @Expression format valid
             ErrorCodeValid = '0x0 <= %s <= 0xFFFFFFFF'
-            PatternValidRangeIn = '(NOT)?\s*(\d+\s*-\s*\d+|0[xX][a-fA-F0-9]+\s*-\s*0[xX][a-fA-F0-9]+|LT\s*\d+|LT\s*0[xX][a-fA-F0-9]+|GT\s*\d+|GT\s*0[xX][a-fA-F0-9]+|LE\s*\d+|LE\s*0[xX][a-fA-F0-9]+|GE\s*\d+|GE\s*0[xX][a-fA-F0-9]+|XOR\s*\d+|XOR\s*0[xX][a-fA-F0-9]+|EQ\s*\d+|EQ\s*0[xX][a-fA-F0-9]+)'
-            PatternValidRng = re.compile('^' + '(NOT)?\s*' + PatternValidRangeIn + '$')
+            PatternValidRangeIn = r'(NOT)?\s*(\d+\s*-\s*\d+|0[xX][a-fA-F0-9]+\s*-\s*0[xX][a-fA-F0-9]+|LT\s*\d+|LT\s*0[xX][a-fA-F0-9]+|GT\s*\d+|GT\s*0[xX][a-fA-F0-9]+|LE\s*\d+|LE\s*0[xX][a-fA-F0-9]+|GE\s*\d+|GE\s*0[xX][a-fA-F0-9]+|XOR\s*\d+|XOR\s*0[xX][a-fA-F0-9]+|EQ\s*\d+|EQ\s*0[xX][a-fA-F0-9]+)'
+            PatternValidRng = re.compile('^' + r'(NOT)?\s*' + PatternValidRangeIn + '$')
             for Comment in self._Comments:
                 Comm = Comment[0].strip()
                 if not Comm:
@@ -2071,7 +2071,7 @@ class UniParser(object):
     def CheckKeyValid(self, Key, Contents=None):
         if not Contents:
             Contents = self.FileIn
-        KeyPattern = re.compile('#string\s+%s\s+.*?#language.*?".*?"' % Key, re.S)
+        KeyPattern = re.compile(r'#string\s+%s\s+.*?#language.*?".*?"' % Key, re.S)
         if KeyPattern.search(Contents):
             return True
         return False
diff --git a/BaseTools/Source/Python/Ecc/c.py b/BaseTools/Source/Python/Ecc/c.py
index 61ad084fcc..0ebdc1a996 100644
--- a/BaseTools/Source/Python/Ecc/c.py
+++ b/BaseTools/Source/Python/Ecc/c.py
@@ -43,7 +43,7 @@ def GetArrayPattern():
     return p
 
 def GetTypedefFuncPointerPattern():
-    p = re.compile('[_\w\s]*\([\w\s]*\*+\s*[_\w]+\s*\)\s*\(.*\)', re.DOTALL)
+    p = re.compile(r'[_\w\s]*\([\w\s]*\*+\s*[_\w]+\s*\)\s*\(.*\)', re.DOTALL)
     return p
 
 def GetDB():