If PYTHON is undefined, this fails without the launcher (installed with 3.3 or
from PyPI), but this is better than always failing. Patch from Zachary Ware.
setlocal
set SVNROOT=http://svn.python.org/projects
-if "%PYTHON%" EQU "" set PYTHON=..\pcbuild\python
+if "%PYTHON%" EQU "" set PYTHON=py -2
if "%HTMLHELP%" EQU "" set HTMLHELP=%ProgramFiles%\HTML Help Workshop\hhc.exe
if "%DISTVERSION%" EQU "" for /f "usebackq" %%v in (`%PYTHON% tools/sphinxext/patchlevel.py`) do set DISTVERSION=%%v