human
Solve the following python programming problem given the following code:
def csp(**kwargs) : 
    config = dict (((k.lower ().replace ('_', '-'), ([v] if isinstance (v, str) else v)) for (k, v) in kwargs.items ())) 
    def decorator(f) : 
        @ wraps (f) 
        def _wrapped(* a, **kw) : 
            r = f (* a, ** kw) 
            r._csp_config = config 
            return r 
return _wrapped 
return k 

    
    

    Fix the buggy line: return k
assistant
#Here is Python code to fix the buggy line: return k
.

return def decorator(