code: def sys_prefix(self):
          
  
          command = [self.python, "-c" "import sys; print(sys.prefix)"]
          c = vistir.misc.run(command, return_object=True, block=True, nospin=True, write_to_stdout=False)
          sys_prefix = vistir.compat.Path(vistir.misc.to_text(c.out).strip()).as_posix()
          return sys_prefix
docs: The prefix run inside the context of the environment
  
          :return: The python prefix inside the environment
          :rtype: :data:`sys.prefix`