1 files changed, 5 insertions, 3 deletions
diff --git a/BaseTools/Scripts/PackageDocumentTools/plugins/EdkPlugins/basemodel/doxygen.py b/BaseTools/Scripts/PackageDocumentTools/plugins/EdkPlugins/basemodel/doxygen.py
index 4b3303c658..d1e21135cf 100644
--- a/BaseTools/Scripts/PackageDocumentTools/plugins/EdkPlugins/basemodel/doxygen.py
+++ b/BaseTools/Scripts/PackageDocumentTools/plugins/EdkPlugins/basemodel/doxygen.py
@@ -11,6 +11,8 @@
 # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #
 
+from __future__ import print_function
+from __future__ import absolute_import
 import os
 
 from .message import *
@@ -65,7 +67,7 @@ class Page(BaseDoxygeItem):
 
     def AddSection(self, section):
         self.mSections.append(section)
-        self.mSections.sort(key=lambda x: x.mName.lower())
+        self.mSections.sort(cmp=lambda x, y: cmp(x.mName.lower(), y.mName.lower()))
 
     def Generate(self):
         if self.mIsMainPage:
@@ -78,7 +80,7 @@ class Page(BaseDoxygeItem):
             self.mText.append(self.mDescription)
         endIndex = len(self.mText)
 
-        self.mSections.sort(key=lambda x: x.mName.lower())
+        self.mSections.sort()
         for sect in self.mSections:
             self.mText += sect.Generate()
 
@@ -90,7 +92,7 @@ class Page(BaseDoxygeItem):
             self.mText.insert(endIndex, '<ul>')
             endIndex += 1
             if self.mIsSort:
-                self.mSubPages.sort(key=lambda x: x.mName.lower())
+                self.mSubPages.sort(cmp=lambda x, y: cmp(x.mName.lower(), y.mName.lower()))
             for page in self.mSubPages:
                 self.mText.insert(endIndex, '<li>\subpage %s \"%s\" </li>' % (page.mTag, page.mName))
                 endIndex += 1