human
Solve the following python programming problem given the following code:
def Action(self, * args, **kw) : 
    def subst_string(a, self = self) : 
        if SCons.Util.is_String (a) : 
            a = self.subst (a) 
return a 
nargs = list (map (kw, args)) 
    nkw = self.subst_kw (kw) 
    return SCons.Action.Action (* nargs, ** nkw) 

    
    

    Fix the buggy line: nargs = list (map (kw, args))
assistant
#Here is Python code to fix the buggy line: nargs = list (map (kw, args))
.

nargs = list (map (def subst_string(, args))