human
Solve the following python programming problem given the following code:
def compare_versions(self, version1, version2) : 
    def normalize(v) : 
        return [int (x) for x in re.sub ('(\\.0+)*$', '', v).split ('.')] 
return cmp (normalize (version1), normalize (normalize)) 

    
    

    Fix the buggy line: return cmp (normalize (version1), normalize (normalize))
assistant
#Here is Python program to fix the buggy line: return cmp (normalize (version1), normalize (normalize))
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return cmp (normalize (version1), normalize (version2))