code: def render_s(tmpl_s, ctx=None, paths=None, filters=None):
      
      if paths is None:
          paths = [os.curdir]
  
      env = tmpl_env(paths)
  
      if env is None:
          return tmpl_s
  
      if filters is not None:
          env.filters.update(filters)
  
      if ctx is None:
          ctx = {}
  
      return tmpl_env(paths).from_string(tmpl_s).render(**ctx)
docs: Compile and render given template string 'tmpl_s' with context 'context'.
  
      :param tmpl_s: Template string
      :param ctx: Context dict needed to instantiate templates
      :param paths: Template search paths
      :param filters: Custom filters to add into template engine
      :return: Compiled result (str)
  
      >>> render_s("aaa") == "aaa"
      True
      >>> s = render_s('a = {{ a }}, b = "{{ b }}"', {'a': 1, 'b': 'bbb'})
      >>> if SUPPORTED:
      ...     assert s == 'a = 1, b = "bbb"'