bat安装python的msi包

#把python-2.7.3.amd64.msi和这个脚本放在同一个目录下

@ECHO OFF

::定于初始变量
SET python_home=C:Python27
SET python_exe=%python_home%python.exe

::判断python是否安装
if exist %python_exe% (
echo file %python_exe% is exist ......
) else (
::默认安装目录为C:Python27
ECHO Start to install python-2.7.3.amd64 ......
msiexec /i python-2.7.3.amd64.msi /quiet /passive
ECHO install python2.76 successfully......
)

::检查path中有没有c:python27(有就跳到run，没有就接着执行)
echo start to set python sys path.......
echo %path%|findstr /i "%python_home%"&&(goto run)

::添加到环境变量
echo check python path......
wmic ENVIRONMENT where "name='path' and username='<system>'" set VariableValue="%path%;%python_home%"
::再永久生效
echo aplly path......
set path=%path%;%python_home%

path

:run
::开始安装setuptools

::开始执行python
echo now run py........
python a.py

pause
exit