human
Solve the following python programming problem given the following code:
def copytree(self) : 
    def skimmer(src, dst) : 
        for skip in ('.svn/', 'CVS/') : 
            if (src.startswith (skip) or (('/' + skip) in src)) : 
                return None 
self.outputs.append (dst) 
        log.debug ('Copying %s to %s', src, dst) 
        return dst 
unpack_archive (self.source, self.target, self) 

    
    

    Fix the buggy line: unpack_archive (self.source, self.target, self)
assistant
#Here is Python program to fix the buggy line: unpack_archive (self.

unpack_archive (self.source, self.target, def skimmer()