code: def FxTools(self):
          
          pi = self.pi
          si = self.si
  
          if self.vc_ver <= 10.0:
              include32 = True
              include64 = not pi.target_is_x86() and not pi.current_is_x86()
          else:
              include32 = pi.target_is_x86() or pi.current_is_x86()
              include64 = pi.current_cpu == 'amd64' or pi.target_cpu == 'amd64'
  
          tools = []
          if include32:
              tools += [os.path.join(si.FrameworkDir32, ver)
                        for ver in si.FrameworkVersion32]
          if include64:
              tools += [os.path.join(si.FrameworkDir64, ver)
                        for ver in si.FrameworkVersion64]
          return tools
docs: Microsoft .NET Framework Tools