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-rw-r--r--BaseTools/Source/Python/Common/ToolDefClassObject.py6
1 files changed, 3 insertions, 3 deletions
diff --git a/BaseTools/Source/Python/Common/ToolDefClassObject.py b/BaseTools/Source/Python/Common/ToolDefClassObject.py
index 2b4b238491..afc20a3c17 100644
--- a/BaseTools/Source/Python/Common/ToolDefClassObject.py
+++ b/BaseTools/Source/Python/Common/ToolDefClassObject.py
@@ -30,9 +30,9 @@ from .DataType import TAB_TOD_DEFINES_TARGET, TAB_TOD_DEFINES_TOOL_CHAIN_TAG,\
##
# Static variables used for pattern
#
-gMacroRefPattern = re.compile('(DEF\([^\(\)]+\))')
-gEnvRefPattern = re.compile('(ENV\([^\(\)]+\))')
-gMacroDefPattern = re.compile("DEFINE\s+([^\s]+)")
+gMacroRefPattern = re.compile(r'(DEF\([^\(\)]+\))')
+gEnvRefPattern = re.compile(r'(ENV\([^\(\)]+\))')
+gMacroDefPattern = re.compile(r"DEFINE\s+([^\s]+)")
gDefaultToolsDefFile = "tools_def.txt"
## ToolDefClassObject