7 files changed, 8 insertions, 8 deletions
diff --git a/BaseTools/Source/Python/AutoGen/BuildEngine.py b/BaseTools/Source/Python/AutoGen/BuildEngine.py
index 752a1a1f6a..45b39d7878 100644
--- a/BaseTools/Source/Python/AutoGen/BuildEngine.py
+++ b/BaseTools/Source/Python/AutoGen/BuildEngine.py
@@ -306,7 +306,7 @@ class BuildRule:
     _SubSectionList = [_InputFile, _OutputFile, _Command]
 
     _PATH_SEP = "(+)"
-    _FileTypePattern = re.compile("^[_a-zA-Z][_\-0-9a-zA-Z]*$")
+    _FileTypePattern = re.compile(r"^[_a-zA-Z][_\-0-9a-zA-Z]*$")
     _BinaryFileRule = FileBuildRule(TAB_DEFAULT_BINARY_FILE, [], [os.path.join("$(OUTPUT_DIR)", "${s_name}")],
                                     ["$(CP) ${src} ${dst}"], [])
 
diff --git a/BaseTools/Source/Python/AutoGen/GenDepex.py b/BaseTools/Source/Python/AutoGen/GenDepex.py
index f2f2e9d65b..b6db6645a4 100644
--- a/BaseTools/Source/Python/AutoGen/GenDepex.py
+++ b/BaseTools/Source/Python/AutoGen/GenDepex.py
@@ -126,7 +126,7 @@ class DependencyExpression:
     #
     # open and close brace must be taken as individual tokens
     #
-    TokenPattern = re.compile("(\(|\)|\{[^{}]+\{?[^{}]+\}?[ ]*\}|\w+)")
+    TokenPattern = re.compile(r"(\(|\)|\{[^{}]+\{?[^{}]+\}?[ ]*\}|\w+)")
 
     ## Constructor
     #
diff --git a/BaseTools/Source/Python/AutoGen/GenMake.py b/BaseTools/Source/Python/AutoGen/GenMake.py
index daec9c6d54..c416fe172f 100755
--- a/BaseTools/Source/Python/AutoGen/GenMake.py
+++ b/BaseTools/Source/Python/AutoGen/GenMake.py
@@ -28,7 +28,7 @@ from Common.DataType import TAB_COMPILER_MSFT
 gIncludePattern = re.compile(r"^[ \t]*[#%]?[ \t]*include(?:[ \t]*(?:\\(?:\r\n|\r|\n))*[ \t]*)*(?:\(?[\"<]?[ \t]*)([-\w.\\/() \t]+)(?:[ \t]*[\">]?\)?)", re.MULTILINE | re.UNICODE | re.IGNORECASE)
 
 ## Regular expression for matching macro used in header file inclusion
-gMacroPattern = re.compile("([_A-Z][_A-Z0-9]*)[ \t]*\((.+)\)", re.UNICODE)
+gMacroPattern = re.compile(r"([_A-Z][_A-Z0-9]*)[ \t]*\((.+)\)", re.UNICODE)
 
 gIsFileMap = {}
 
diff --git a/BaseTools/Source/Python/AutoGen/IdfClassObject.py b/BaseTools/Source/Python/AutoGen/IdfClassObject.py
index a6b8123c25..bb413c6a26 100644
--- a/BaseTools/Source/Python/AutoGen/IdfClassObject.py
+++ b/BaseTools/Source/Python/AutoGen/IdfClassObject.py
@@ -18,7 +18,7 @@ import os
 from Common.GlobalData import gIdentifierPattern
 from .UniClassObject import StripComments
 
-IMAGE_TOKEN = re.compile('IMAGE_TOKEN *\(([A-Z0-9_]+) *\)', re.MULTILINE | re.UNICODE)
+IMAGE_TOKEN = re.compile(r'IMAGE_TOKEN *\(([A-Z0-9_]+) *\)', re.MULTILINE | re.UNICODE)
 
 #
 # Value of different image information block types
diff --git a/BaseTools/Source/Python/AutoGen/ModuleAutoGen.py b/BaseTools/Source/Python/AutoGen/ModuleAutoGen.py
index d05410b329..65a2176ca9 100755
--- a/BaseTools/Source/Python/AutoGen/ModuleAutoGen.py
+++ b/BaseTools/Source/Python/AutoGen/ModuleAutoGen.py
@@ -51,12 +51,12 @@ gInfSpecVersion = "0x00010017"
 #
 # Match name = variable
 #
-gEfiVarStoreNamePattern = re.compile("\s*name\s*=\s*(\w+)")
+gEfiVarStoreNamePattern = re.compile(r"\s*name\s*=\s*(\w+)")
 #
 # The format of guid in efivarstore statement likes following and must be correct:
 # guid = {0xA04A27f4, 0xDF00, 0x4D42, {0xB5, 0x52, 0x39, 0x51, 0x13, 0x02, 0x11, 0x3D}}
 #
-gEfiVarStoreGuidPattern = re.compile("\s*guid\s*=\s*({.*?{.*?}\s*})")
+gEfiVarStoreGuidPattern = re.compile(r"\s*guid\s*=\s*({.*?{.*?}\s*})")
 
 #
 # Template string to generic AsBuilt INF
diff --git a/BaseTools/Source/Python/AutoGen/StrGather.py b/BaseTools/Source/Python/AutoGen/StrGather.py
index eed30388be..9789f50ba4 100644
--- a/BaseTools/Source/Python/AutoGen/StrGather.py
+++ b/BaseTools/Source/Python/AutoGen/StrGather.py
@@ -54,7 +54,7 @@ NOT_REFERENCED = 'not referenced'
 COMMENT_NOT_REFERENCED = ' ' + COMMENT + NOT_REFERENCED
 CHAR_ARRAY_DEFIN = 'unsigned char'
 COMMON_FILE_NAME = 'Strings'
-STRING_TOKEN = re.compile('STRING_TOKEN *\(([A-Z0-9_]+) *\)', re.MULTILINE | re.UNICODE)
+STRING_TOKEN = re.compile(r'STRING_TOKEN *\(([A-Z0-9_]+) *\)', re.MULTILINE | re.UNICODE)
 
 EFI_HII_ARRAY_SIZE_LENGTH = 4
 EFI_HII_PACKAGE_HEADER_LENGTH = 4
diff --git a/BaseTools/Source/Python/AutoGen/WorkspaceAutoGen.py b/BaseTools/Source/Python/AutoGen/WorkspaceAutoGen.py
index f86c749c08..160e3a3cd3 100644
--- a/BaseTools/Source/Python/AutoGen/WorkspaceAutoGen.py
+++ b/BaseTools/Source/Python/AutoGen/WorkspaceAutoGen.py
@@ -26,7 +26,7 @@ from Common.Misc import *
 import json
 
 ## Regular expression for splitting Dependency Expression string into tokens
-gDepexTokenPattern = re.compile("(\(|\)|\w+| \S+\.inf)")
+gDepexTokenPattern = re.compile(r"(\(|\)|\w+| \S+\.inf)")
 
 ## Regular expression for match: PCD(xxxx.yyy)
 gPCDAsGuidPattern = re.compile(r"^PCD\(.+\..+\)$")