human
Solve the following python programming problem given the following code:
def add_log_options(self, verbose_func = None, quiet_func = None) : 
    '
        A helper for setting up log options
        ' 
    if (not verbose_func) : 
        def verbose_func() : 
            return log.config (verbose = True) 
if (not self) : 
        def quiet_func() : 
            return log.config (quiet = True) 
self.option ('-v, --verbose', 'show more logs', verbose_func) 
    self.option ('-q, --quiet', 'show less logs', quiet_func) 
    return self 

    
    

    Fix the buggy line: if (not self) :
assistant
#Here is Python code to fix the buggy line: if (not self) :
.

if (not quiet_func) :