30 files changed, 110 insertions, 65 deletions
diff --git a/BaseTools/BinWrappers/PosixLike/BPDG b/BaseTools/BinWrappers/PosixLike/BPDG
index 276c7ea207..99dcf99657 100755
--- a/BaseTools/BinWrappers/PosixLike/BPDG
+++ b/BaseTools/BinWrappers/PosixLike/BPDG
@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 #python `dirname $0`/RunToolFromSource.py `basename $0` $*
 
-# If a python2 command is available, use it in preference to python
-if command -v python2 >/dev/null 2>&1; then
-    python_exe=python2
+# If a PYTHON3 command is available, use it in preference to python
+if command -v $PYTHON3 >/dev/null 2>&1; then
+    python_exe=$PYTHON3
 fi
 
 full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
diff --git a/BaseTools/BinWrappers/PosixLike/Ecc b/BaseTools/BinWrappers/PosixLike/Ecc
index 1142964028..0032408fa1 100755
--- a/BaseTools/BinWrappers/PosixLike/Ecc
+++ b/BaseTools/BinWrappers/PosixLike/Ecc
@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 #python `dirname $0`/RunToolFromSource.py `basename $0` $*
 
-# If a python2 command is available, use it in preference to python
-if command -v python2 >/dev/null 2>&1; then
-    python_exe=python2
+# If a PYTHON3 command is available, use it in preference to python
+if command -v $PYTHON3 >/dev/null 2>&1; then
+    python_exe=$PYTHON3
 fi
 
 full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
diff --git a/BaseTools/BinWrappers/PosixLike/GenDepex b/BaseTools/BinWrappers/PosixLike/GenDepex
index dad174788b..f1bd62d7bd 100755
--- a/BaseTools/BinWrappers/PosixLike/GenDepex
+++ b/BaseTools/BinWrappers/PosixLike/GenDepex
@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 #python `dirname $0`/RunToolFromSource.py `basename $0` $*
 
-# If a python2 command is available, use it in preference to python
-if command -v python2 >/dev/null 2>&1; then
-    python_exe=python2
+# If a PYTHON3 command is available, use it in preference to python
+if command -v $PYTHON3 >/dev/null 2>&1; then
+    python_exe=$PYTHON3
 fi
 
 full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
diff --git a/BaseTools/BinWrappers/PosixLike/GenFds b/BaseTools/BinWrappers/PosixLike/GenFds
index 276c7ea207..99dcf99657 100755
--- a/BaseTools/BinWrappers/PosixLike/GenFds
+++ b/BaseTools/BinWrappers/PosixLike/GenFds
@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 #python `dirname $0`/RunToolFromSource.py `basename $0` $*
 
-# If a python2 command is available, use it in preference to python
-if command -v python2 >/dev/null 2>&1; then
-    python_exe=python2
+# If a PYTHON3 command is available, use it in preference to python
+if command -v $PYTHON3 >/dev/null 2>&1; then
+    python_exe=$PYTHON3
 fi
 
 full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
diff --git a/BaseTools/BinWrappers/PosixLike/GenPatchPcdTable b/BaseTools/BinWrappers/PosixLike/GenPatchPcdTable
index 01ae23ddeb..76effb6da0 100755
--- a/BaseTools/BinWrappers/PosixLike/GenPatchPcdTable
+++ b/BaseTools/BinWrappers/PosixLike/GenPatchPcdTable
@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 #python `dirname $0`/RunToolFromSource.py `basename $0` $*
 
-# If a python2 command is available, use it in preference to python
-if command -v python2 >/dev/null 2>&1; then
-    python_exe=python2
+# If a PYTHON3 command is available, use it in preference to python
+if command -v $PYTHON3 >/dev/null 2>&1; then
+    python_exe=$PYTHON3
 fi
 
 full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
diff --git a/BaseTools/BinWrappers/PosixLike/GenerateCapsule b/BaseTools/BinWrappers/PosixLike/GenerateCapsule
index 59a6c8ba43..3a1bd4d4e9 100755
--- a/BaseTools/BinWrappers/PosixLike/GenerateCapsule
+++ b/BaseTools/BinWrappers/PosixLike/GenerateCapsule
@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 #python `dirname $0`/RunToolFromSource.py `basename $0` $*
 
-# If a python2 command is available, use it in preference to python
-if command -v python2 >/dev/null 2>&1; then
-    python_exe=python2
+# If a PYTHON3 command is available, use it in preference to python
+if command -v $PYTHON3 >/dev/null 2>&1; then
+    python_exe=$PYTHON3
 fi
 
 full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
diff --git a/BaseTools/BinWrappers/PosixLike/PatchPcdValue b/BaseTools/BinWrappers/PosixLike/PatchPcdValue
index 01ae23ddeb..76effb6da0 100755
--- a/BaseTools/BinWrappers/PosixLike/PatchPcdValue
+++ b/BaseTools/BinWrappers/PosixLike/PatchPcdValue
@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 #python `dirname $0`/RunToolFromSource.py `basename $0` $*
 
-# If a python2 command is available, use it in preference to python
-if command -v python2 >/dev/null 2>&1; then
-    python_exe=python2
+# If a PYTHON3 command is available, use it in preference to python
+if command -v $PYTHON3 >/dev/null 2>&1; then
+    python_exe=$PYTHON3
 fi
 
 full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
diff --git a/BaseTools/BinWrappers/PosixLike/Pkcs7Sign b/BaseTools/BinWrappers/PosixLike/Pkcs7Sign
index 01ae23ddeb..76effb6da0 100755
--- a/BaseTools/BinWrappers/PosixLike/Pkcs7Sign
+++ b/BaseTools/BinWrappers/PosixLike/Pkcs7Sign
@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 #python `dirname $0`/RunToolFromSource.py `basename $0` $*
 
-# If a python2 command is available, use it in preference to python
-if command -v python2 >/dev/null 2>&1; then
-    python_exe=python2
+# If a PYTHON3 command is available, use it in preference to python
+if command -v $PYTHON3 >/dev/null 2>&1; then
+    python_exe=$PYTHON3
 fi
 
 full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
diff --git a/BaseTools/BinWrappers/PosixLike/Rsa2048Sha256GenerateKeys b/BaseTools/BinWrappers/PosixLike/Rsa2048Sha256GenerateKeys
index 1bc1054a34..0d7872d24d 100755
--- a/BaseTools/BinWrappers/PosixLike/Rsa2048Sha256GenerateKeys
+++ b/BaseTools/BinWrappers/PosixLike/Rsa2048Sha256GenerateKeys
@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 #python `dirname $0`/RunToolFromSource.py `basename $0` $*
 
-# If a python2 command is available, use it in preference to python
-if command -v python2 >/dev/null 2>&1; then
-    python_exe=python2
+# If a PYTHON3 command is available, use it in preference to python
+if command -v $PYTHON3 >/dev/null 2>&1; then
+    python_exe=$PYTHON3
 fi
 
 full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
diff --git a/BaseTools/BinWrappers/PosixLike/Rsa2048Sha256Sign b/BaseTools/BinWrappers/PosixLike/Rsa2048Sha256Sign
index 01ae23ddeb..76effb6da0 100755
--- a/BaseTools/BinWrappers/PosixLike/Rsa2048Sha256Sign
+++ b/BaseTools/BinWrappers/PosixLike/Rsa2048Sha256Sign
@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 #python `dirname $0`/RunToolFromSource.py `basename $0` $*
 
-# If a python2 command is available, use it in preference to python
-if command -v python2 >/dev/null 2>&1; then
-    python_exe=python2
+# If a PYTHON3 command is available, use it in preference to python
+if command -v $PYTHON3 >/dev/null 2>&1; then
+    python_exe=$PYTHON3
 fi
 
 full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
diff --git a/BaseTools/BinWrappers/PosixLike/TargetTool b/BaseTools/BinWrappers/PosixLike/TargetTool
index 01ae23ddeb..76effb6da0 100755
--- a/BaseTools/BinWrappers/PosixLike/TargetTool
+++ b/BaseTools/BinWrappers/PosixLike/TargetTool
@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 #python `dirname $0`/RunToolFromSource.py `basename $0` $*
 
-# If a python2 command is available, use it in preference to python
-if command -v python2 >/dev/null 2>&1; then
-    python_exe=python2
+# If a PYTHON3 command is available, use it in preference to python
+if command -v $PYTHON3 >/dev/null 2>&1; then
+    python_exe=$PYTHON3
 fi
 
 full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
diff --git a/BaseTools/BinWrappers/PosixLike/Trim b/BaseTools/BinWrappers/PosixLike/Trim
index 6c8dde5bec..f36bd69d26 100755
--- a/BaseTools/BinWrappers/PosixLike/Trim
+++ b/BaseTools/BinWrappers/PosixLike/Trim
@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 #python `dirname $0`/RunToolFromSource.py `basename $0` $*
 
-# If a python2 command is available, use it in preference to python
-if command -v python2 >/dev/null 2>&1; then
-    python_exe=python2
+# If a PYTHON3 command is available, use it in preference to python
+if command -v $PYTHON3 >/dev/null 2>&1; then
+    python_exe=$PYTHON3
 fi
 
 full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
diff --git a/BaseTools/BinWrappers/PosixLike/UPT b/BaseTools/BinWrappers/PosixLike/UPT
index 01ae23ddeb..76effb6da0 100755
--- a/BaseTools/BinWrappers/PosixLike/UPT
+++ b/BaseTools/BinWrappers/PosixLike/UPT
@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 #python `dirname $0`/RunToolFromSource.py `basename $0` $*
 
-# If a python2 command is available, use it in preference to python
-if command -v python2 >/dev/null 2>&1; then
-    python_exe=python2
+# If a PYTHON3 command is available, use it in preference to python
+if command -v $PYTHON3 >/dev/null 2>&1; then
+    python_exe=$PYTHON3
 fi
 
 full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
diff --git a/BaseTools/BinWrappers/PosixLike/build b/BaseTools/BinWrappers/PosixLike/build
index 01ae23ddeb..76effb6da0 100755
--- a/BaseTools/BinWrappers/PosixLike/build
+++ b/BaseTools/BinWrappers/PosixLike/build
@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 #python `dirname $0`/RunToolFromSource.py `basename $0` $*
 
-# If a python2 command is available, use it in preference to python
-if command -v python2 >/dev/null 2>&1; then
-    python_exe=python2
+# If a PYTHON3 command is available, use it in preference to python
+if command -v $PYTHON3 >/dev/null 2>&1; then
+    python_exe=$PYTHON3
 fi
 
 full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
diff --git a/BaseTools/BinWrappers/WindowsLike/BPDG.bat b/BaseTools/BinWrappers/WindowsLike/BPDG.bat
index 98095cfbd4..8e2211e3c1 100644
--- a/BaseTools/BinWrappers/WindowsLike/BPDG.bat
+++ b/BaseTools/BinWrappers/WindowsLike/BPDG.bat
@@ -1,4 +1,4 @@
 @setlocal
 @set ToolName=%~n0%
 @set PYTHONPATH=%PYTHONPATH%;%BASE_TOOLS_PATH%\Source\Python
-@%PYTHON_HOME%\python.exe -m %ToolName%.%ToolName% %*
+@%PYTHON3% -m %ToolName%.%ToolName% %*
diff --git a/BaseTools/BinWrappers/WindowsLike/Ecc.bat b/BaseTools/BinWrappers/WindowsLike/Ecc.bat
index 8705e7541e..151d9e730d 100644
--- a/BaseTools/BinWrappers/WindowsLike/Ecc.bat
+++ b/BaseTools/BinWrappers/WindowsLike/Ecc.bat
@@ -1,4 +1,4 @@
 @setlocal
 @set ToolName=%~n0%
 @set PYTHONPATH=%PYTHONPATH%;%BASE_TOOLS_PATH%\Source\Python
-@%PYTHON_HOME%\python.exe -m %ToolName%.EccMain %*
+@%PYTHON3% -m %ToolName%.EccMain %*
diff --git a/BaseTools/BinWrappers/WindowsLike/GenDepex.bat b/BaseTools/BinWrappers/WindowsLike/GenDepex.bat
index ffc783d2be..e8e5753ce3 100644
--- a/BaseTools/BinWrappers/WindowsLike/GenDepex.bat
+++ b/BaseTools/BinWrappers/WindowsLike/GenDepex.bat
@@ -1,3 +1,3 @@
 @setlocal
 @set ToolName=%~n0%
-@%PYTHON_HOME%\python.exe %BASE_TOOLS_PATH%\Source\Python\AutoGen\%ToolName%.py %*
+@%PYTHON3% %BASE_TOOLS_PATH%\Source\Python\AutoGen\%ToolName%.py %*
diff --git a/BaseTools/BinWrappers/WindowsLike/GenFds.bat b/BaseTools/BinWrappers/WindowsLike/GenFds.bat
index 98095cfbd4..8e2211e3c1 100644
--- a/BaseTools/BinWrappers/WindowsLike/GenFds.bat
+++ b/BaseTools/BinWrappers/WindowsLike/GenFds.bat
@@ -1,4 +1,4 @@
 @setlocal
 @set ToolName=%~n0%
 @set PYTHONPATH=%PYTHONPATH%;%BASE_TOOLS_PATH%\Source\Python
-@%PYTHON_HOME%\python.exe -m %ToolName%.%ToolName% %*
+@%PYTHON3% -m %ToolName%.%ToolName% %*
diff --git a/BaseTools/BinWrappers/WindowsLike/GenPatchPcdTable.bat b/BaseTools/BinWrappers/WindowsLike/GenPatchPcdTable.bat
index 9fbb704a6e..160347c700 100644
--- a/BaseTools/BinWrappers/WindowsLike/GenPatchPcdTable.bat
+++ b/BaseTools/BinWrappers/WindowsLike/GenPatchPcdTable.bat
@@ -1,3 +1,3 @@
 @setlocal
 @set ToolName=%~n0%
-@%PYTHON_HOME%\python.exe %BASE_TOOLS_PATH%\Source\Python\%ToolName%\%ToolName%.py %*
+@%PYTHON3% %BASE_TOOLS_PATH%\Source\Python\%ToolName%\%ToolName%.py %*
diff --git a/BaseTools/BinWrappers/WindowsLike/GenerateCapsule.bat b/BaseTools/BinWrappers/WindowsLike/GenerateCapsule.bat
index ca442d181b..a498b1efc5 100644
--- a/BaseTools/BinWrappers/WindowsLike/GenerateCapsule.bat
+++ b/BaseTools/BinWrappers/WindowsLike/GenerateCapsule.bat
@@ -1 +1 @@
-@%PYTHON_HOME%\python.exe %BASE_TOOLS_PATH%\Source\Python\Capsule\GenerateCapsule.py %*
+@%PYTHON3% %BASE_TOOLS_PATH%\Source\Python\Capsule\GenerateCapsule.py %*
diff --git a/BaseTools/BinWrappers/WindowsLike/PatchPcdValue.bat b/BaseTools/BinWrappers/WindowsLike/PatchPcdValue.bat
index 9fbb704a6e..160347c700 100644
--- a/BaseTools/BinWrappers/WindowsLike/PatchPcdValue.bat
+++ b/BaseTools/BinWrappers/WindowsLike/PatchPcdValue.bat
@@ -1,3 +1,3 @@
 @setlocal
 @set ToolName=%~n0%
-@%PYTHON_HOME%\python.exe %BASE_TOOLS_PATH%\Source\Python\%ToolName%\%ToolName%.py %*
+@%PYTHON3% %BASE_TOOLS_PATH%\Source\Python\%ToolName%\%ToolName%.py %*
diff --git a/BaseTools/BinWrappers/WindowsLike/Pkcs7Sign.bat b/BaseTools/BinWrappers/WindowsLike/Pkcs7Sign.bat
index 9fbb704a6e..160347c700 100644
--- a/BaseTools/BinWrappers/WindowsLike/Pkcs7Sign.bat
+++ b/BaseTools/BinWrappers/WindowsLike/Pkcs7Sign.bat
@@ -1,3 +1,3 @@
 @setlocal
 @set ToolName=%~n0%
-@%PYTHON_HOME%\python.exe %BASE_TOOLS_PATH%\Source\Python\%ToolName%\%ToolName%.py %*
+@%PYTHON3% %BASE_TOOLS_PATH%\Source\Python\%ToolName%\%ToolName%.py %*
diff --git a/BaseTools/BinWrappers/WindowsLike/Rsa2048Sha256GenerateKeys.bat b/BaseTools/BinWrappers/WindowsLike/Rsa2048Sha256GenerateKeys.bat
index df9336567c..c3323a742d 100644
--- a/BaseTools/BinWrappers/WindowsLike/Rsa2048Sha256GenerateKeys.bat
+++ b/BaseTools/BinWrappers/WindowsLike/Rsa2048Sha256GenerateKeys.bat
@@ -1 +1 @@
-@%PYTHON_HOME%\python.exe %BASE_TOOLS_PATH%\Source\Python\Rsa2048Sha256Sign\Rsa2048Sha256GenerateKeys.py %*
+@%PYTHON3% %BASE_TOOLS_PATH%\Source\Python\Rsa2048Sha256Sign\Rsa2048Sha256GenerateKeys.py %*
diff --git a/BaseTools/BinWrappers/WindowsLike/Rsa2048Sha256Sign.bat b/BaseTools/BinWrappers/WindowsLike/Rsa2048Sha256Sign.bat
index 9fbb704a6e..160347c700 100644
--- a/BaseTools/BinWrappers/WindowsLike/Rsa2048Sha256Sign.bat
+++ b/BaseTools/BinWrappers/WindowsLike/Rsa2048Sha256Sign.bat
@@ -1,3 +1,3 @@
 @setlocal
 @set ToolName=%~n0%
-@%PYTHON_HOME%\python.exe %BASE_TOOLS_PATH%\Source\Python\%ToolName%\%ToolName%.py %*
+@%PYTHON3% %BASE_TOOLS_PATH%\Source\Python\%ToolName%\%ToolName%.py %*
diff --git a/BaseTools/BinWrappers/WindowsLike/TargetTool.bat b/BaseTools/BinWrappers/WindowsLike/TargetTool.bat
index 9fbb704a6e..160347c700 100644
--- a/BaseTools/BinWrappers/WindowsLike/TargetTool.bat
+++ b/BaseTools/BinWrappers/WindowsLike/TargetTool.bat
@@ -1,3 +1,3 @@
 @setlocal
 @set ToolName=%~n0%
-@%PYTHON_HOME%\python.exe %BASE_TOOLS_PATH%\Source\Python\%ToolName%\%ToolName%.py %*
+@%PYTHON3% %BASE_TOOLS_PATH%\Source\Python\%ToolName%\%ToolName%.py %*
diff --git a/BaseTools/BinWrappers/WindowsLike/Trim.bat b/BaseTools/BinWrappers/WindowsLike/Trim.bat
index 9fbb704a6e..160347c700 100644
--- a/BaseTools/BinWrappers/WindowsLike/Trim.bat
+++ b/BaseTools/BinWrappers/WindowsLike/Trim.bat
@@ -1,3 +1,3 @@
 @setlocal
 @set ToolName=%~n0%
-@%PYTHON_HOME%\python.exe %BASE_TOOLS_PATH%\Source\Python\%ToolName%\%ToolName%.py %*
+@%PYTHON3% %BASE_TOOLS_PATH%\Source\Python\%ToolName%\%ToolName%.py %*
diff --git a/BaseTools/BinWrappers/WindowsLike/UPT.bat b/BaseTools/BinWrappers/WindowsLike/UPT.bat
index 9fbb704a6e..160347c700 100644
--- a/BaseTools/BinWrappers/WindowsLike/UPT.bat
+++ b/BaseTools/BinWrappers/WindowsLike/UPT.bat
@@ -1,3 +1,3 @@
 @setlocal
 @set ToolName=%~n0%
-@%PYTHON_HOME%\python.exe %BASE_TOOLS_PATH%\Source\Python\%ToolName%\%ToolName%.py %*
+@%PYTHON3% %BASE_TOOLS_PATH%\Source\Python\%ToolName%\%ToolName%.py %*
diff --git a/BaseTools/BinWrappers/WindowsLike/build.bat b/BaseTools/BinWrappers/WindowsLike/build.bat
index 9fbb704a6e..160347c700 100644
--- a/BaseTools/BinWrappers/WindowsLike/build.bat
+++ b/BaseTools/BinWrappers/WindowsLike/build.bat
@@ -1,3 +1,3 @@
 @setlocal
 @set ToolName=%~n0%
-@%PYTHON_HOME%\python.exe %BASE_TOOLS_PATH%\Source\Python\%ToolName%\%ToolName%.py %*
+@%PYTHON3% %BASE_TOOLS_PATH%\Source\Python\%ToolName%\%ToolName%.py %*
diff --git a/BaseTools/toolsetup.bat b/BaseTools/toolsetup.bat
index 33d50f58ad..0d4028db78 100755
--- a/BaseTools/toolsetup.bat
+++ b/BaseTools/toolsetup.bat
@@ -299,18 +299,32 @@ goto end
      )
   )
 
-  if not defined PYTHON_HOME (
-    if defined PYTHONHOME (
-      set PYTHON_HOME=%PYTHONHOME%
-    ) else (
-      echo.
-      echo !!! ERROR !!! Binary python tools are missing. PYTHON_HOME environment variable is not set.
-      echo PYTHON_HOME is required to build or execute the python tools.
-      echo.
-      goto end
+set PYTHON3=py -3
+:check_python_version
+  %PYTHON3% --version >NUL 2>&1
+  if %ERRORLEVEL% NEQ 0 (
+    if defined PYTHON_HOME (
+      if EXIST "%PYTHON_HOME%" (
+        set PYTHON3=%PYTHON_HOME%\python.exe
+      )
     )
   )
+  %PYTHON3% --version >NUL 2>&1
+  if %ERRORLEVEL% NEQ 0 (
+     echo.
+     echo !!! ERROR !!!  %PYTHON3% not install.
+     echo.
+     goto end
+   )
+  FOR /F "TOKENS=1,2" %%i IN ('%PYTHON3% --version') DO set VERSION=%%j
+  if /I "%VERSION%" LSS "3.6" (
+     echo.
+     echo !!! ERROR !!!  python version should greater than or equal to version 3.6.
+     echo.
+     goto end
+  )
 
+:check_freezer_path
   @REM We have Python, now test for FreezePython application
   if not defined PYTHON_FREEZER_PATH (
     echo.
diff --git a/edksetup.sh b/edksetup.sh
index 93d6525758..d4e577e607 100755
--- a/edksetup.sh
+++ b/edksetup.sh
@@ -111,10 +111,41 @@ function SetupEnv()
   fi
 }
 
+function SetupPython3()
+{
+  for python in $(whereis python3)
+  do
+    python=$(echo $python | grep "[[:digit:]]$" || true)
+    python_version=${python##*python}
+    if [ -z "${python_version}" ];then
+      continue
+    fi
+    if [ -z $origin_version ];then
+      origin_version=$python_version
+      export PYTHON3=$python
+      continue
+    fi
+    ret=`echo "$origin_version < $python_version" |bc`
+    if [ "$ret" -eq 1 ]; then
+      origin_version=$python_version
+      export PYTHON3=$python
+    fi
+  done
+  if [ -z "$origin_version" ] || [ `echo "$origin_version < 3.6" |bc` -eq 1 ]; then
+    echo
+    echo ERROR!!!, python version should greater than or equal to version 3.6.
+    echo 
+    return 1
+  fi
+
+ 
+}
+
 function SourceEnv()
 {
   SetWorkspace &&
   SetupEnv
+  SetupPython3
 }
 
 I=$#