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-rw-r--r--BaseTools/Source/Python/build/build.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/BaseTools/Source/Python/build/build.py b/BaseTools/Source/Python/build/build.py
index 416aa73549..344b006bc4 100644
--- a/BaseTools/Source/Python/build/build.py
+++ b/BaseTools/Source/Python/build/build.py
@@ -77,7 +77,7 @@ TmpTableDict = {}
# Otherwise, False is returned
#
def IsToolInPath(tool):
- if os.environ.has_key('PATHEXT'):
+ if 'PATHEXT' in os.environ:
extns = os.environ['PATHEXT'].split(os.path.pathsep)
else:
extns = ('',)