old_contents: import os
  import distutils.msvccompiler
  from distutils.msvccompiler import *
  
  
  class MSVCCompiler(distutils.msvccompiler.MSVCCompiler):
      def __init__(self, verbose=0, dry_run=0, force=0):
          distutils.msvccompiler.MSVCCompiler.__init__(self, verbose, dry_run, force)
  
      def initialize(self, plat_name=None):
          environ_lib = os.getenv('lib')
          environ_include = os.getenv('include')
          distutils.msvccompiler.MSVCCompiler.initialize(self, plat_name)
          if environ_lib is not None:
              os.environ['lib'] = environ_lib + os.environ['lib']
          if environ_include is not None:
              os.environ['include'] = environ_include + os.environ['include']
  
new_contents: import os
  import distutils.msvccompiler
  from distutils.msvccompiler import *
  
  from .system_info import platform_bits
  
  
  class MSVCCompiler(distutils.msvccompiler.MSVCCompiler):
      def __init__(self, verbose=0, dry_run=0, force=0):
          distutils.msvccompiler.MSVCCompiler.__init__(self, verbose, dry_run, force)
  
      def initialize(self, plat_name=None):
          environ_lib = os.getenv('lib')
          environ_include = os.getenv('include')
          distutils.msvccompiler.MSVCCompiler.initialize(self, plat_name)
          if environ_lib is not None:
              os.environ['lib'] = environ_lib + os.environ['lib']
          if environ_include is not None:
              os.environ['include'] = environ_include + os.environ['include']
          if platform_bits == 32:
              self.compile_options += ['/arch:SSE2']
              self.compile_options_debug += ['/arch:SSE2']
  
subject: enable SSE2 for 32-bit msvc 9 and 10 compilers