code: def write_service_double_file(target_root, service_name, rendered):
      
      target_path = os.path.join(
          target_root,
          'snapstore_schemas', 'service_doubles', '%s.py' % service_name
      )
      with open(target_path, 'w') as target_file:
          target_file.write(rendered)
docs: Render syntactically valid python service double code.