human
Solve the following python programming problem given the following code:
def profile_func(filename) : 
    'Function/method decorator that will cause only the decorated callable
        to be profiled and saved to the specified file.

        @type  filename: str
        @param filename: The filename to write the profile to.' 
    if (not os.path.isabs (filename)) : 
        filename = os.path.join (PROFILE_LOG_BASE, filename) 
def proffunc(f) : 
        def profiled_func(* args, **kwargs) : 
            import cProfile 
            import logging 
            (base, ext) = os.path.splitext (filename) 
            base = ((base + '-') + datetime.datetime.now ().strftime ('%Y%m%dT%HH%MM%SS%f')) 
            final_log_file = (base + ext) 
            logging.info (('Profiling function %s' % f.__name__)) 
            try : 
                profiler = cProfile.Profile () 
                retval = profiler.runcall (f, * args, ** kwargs) 
                profiler.getstats () 
                profiler.dump_stats (final_log_file) 
except IOError : 
                logging.exception (("Could not open profile file '%(filename)s'" % { 
                    'filename' : final_log_file, 
})) 
return retval 
return profiled_func 
return filename 

    
    

    Fix the buggy line: return filename
assistant
#Here is Python program to fix the buggy line: return filename
.

return def proffunc(