Os.system (old python) and parameter arguments

I am trying to write a simple code that executes the os command with parameters

#!/usr/bin/env python
# -*- coding: utf-8 -*-
import os

target = "i586"

build = os.system('/usr/bin/hsh --target="target"')

      

        
        
        
      

    

But it always starts as / usr / bin / hsh --target = target instead of target = i586. Also subprocess.call doesn't work, calls too old python.

Please help me.