[Python-checkins] bpo-34267: Update find_python.bat to use 3.7 if available (GH-8552)

[Steve Dower]

https://github.com/python/cpython/commit/6750922f8d3428d84a016c34d6fcd99659e8610c
commit: 6750922f8d3428d84a016c34d6fcd99659e8610c
branch: master
author: Steve Dower <steve.dower at microsoft.com>
committer: GitHub <noreply at github.com>
date: 2018-09-17T14:41:53-07:00
summary:

bpo-34267: Update find_python.bat to use 3.7 if available (GH-8552)

files:
M PCbuild/find_python.bat

diff --git a/PCbuild/find_python.bat b/PCbuild/find_python.bat
index 17ce7ac609c1..d0778ddd7347 100644
--- a/PCbuild/find_python.bat
+++ b/PCbuild/find_python.bat
@@ -34,7 +34,7 @@
 @if NOT "%HOST_PYTHON%"=="" @%HOST_PYTHON% -Ec "import sys; assert sys.version_info[:2] >= (3, 6)" >nul 2>nul && (set PYTHON="%HOST_PYTHON%") && (set _Py_Python_Source=found as HOST_PYTHON) && goto :found
 
 @rem If py.exe finds a recent enough version, use that one
- at py -3.6 -EV >nul 2>&1 && (set PYTHON=py -3.6) && (set _Py_Python_Source=found with py.exe) && goto :found
+ at for %%p in (3.7 3.6) do @py -%%p -EV >nul 2>&1 && (set PYTHON=py -%%p) && (set _Py_Python_Source=found %%p with py.exe) && goto :found
 
 @if NOT exist "%_Py_EXTERNALS_DIR%" mkdir "%_Py_EXTERNALS_DIR%"
 @set _Py_NUGET=%NUGET%
@@ -55,7 +55,7 @@
 )
 @echo Installing Python via nuget...
 @"%_Py_NUGET%" install pythonx86 -ExcludeVersion -OutputDirectory "%_Py_EXTERNALS_DIR%"
- at rem Quote it here; it's not quoted later because "py -3.6" wouldn't work
+ at rem Quote it here; it's not quoted later because "py -x.y" wouldn't work
 @if not errorlevel 1 (set PYTHON="%_Py_EXTERNALS_DIR%\pythonx86\tools\python.exe") & (set _Py_Python_Source=found on nuget.org) & goto :found