human
Solve the following python programming problem given the following code:
def ignore_patterns(* patterns) : 
    'Function that can be used as copytree() ignore parameter.

    Patterns is a sequence of glob-style patterns
    that are used to exclude files' 
    import fnmatch 
    def _ignore_patterns(path, names) : 
        ignored_names = [] 
        for pattern in patterns : 
            ignored_names.extend (fnmatch.filter (names, pattern)) 
return set (ignored_names) 
return patterns 

    
    

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

return def _ignore_patterns(