anchor.diff:  
   if not exist %PYTHON_EXE% (
   if not exist %PYTHON_MSI% (
  -  curl -L -O http://python.org/ftp/python/%PYTHON_VERSION%/%PYTHON_MSI%
  +    curl -L -O http://python.org/ftp/python/%PYTHON_VERSION%/%PYTHON_MSI%
   )
   )
   
  
positive.code: if not exist %PYTHON_EXE% (
  if exist %PYTHON_MSI% (
      msiexec.exe /qb /i %PYTHON_MSI% ALLUSERS=1 ADDLOCAL=ALL
  )
  )
  
  
negative.code: 
  pip install virtualenv
  
  echo,
  echo ------------------------------------------------------------------
  echo Python %PYTHON_VERSION%, easy_install, pip, and virtualenv are 
  echo now installed!
  echo ------------------------------------------------------------------
  echo,
  