human
Solve the following python programming problem given the following code:
def categorical_multiedge_match(attr, default) : 
    if nx.utils.is_string_like (attr) : 
        def match(datasets1, datasets2) : 
            values1 = set ([data.get (attr, default) for data in datasets1.values ()]) 
            values2 = set ([data.get (attr, default) for data in datasets2.values ()]) 
            return (values1 == values2) 
else : 
        attrs = list (zip (default, default)) 
        def match(datasets1, datasets2) : 
            values1 = set ([]) 
            for data1 in datasets1.values () : 
                x = tuple ((data1.get (attr, d) for (attr, d) in attrs)) 
                values1.add (x) 
values2 = set ([]) 
            for data2 in datasets2.values () : 
                x = tuple ((data2.get (attr, d) for (attr, d) in attrs)) 
                values2.add (x) 
return (values1 == values2) 
return match 

    
    

    Fix the buggy line: attrs = list (zip (default, default))
assistant
#Here is Python code to fix the buggy line: attrs = list (zip (default, default))
.

attrs = list (zip (attr, default))