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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def levenshteinDistance(self, tree):
        '''
        Finds the Levenshtein distance between this tree and the one passed as argument.
        '''

        s1 = ' '.join(map(View.__microStr__, self.views))
        s2 = ' '.join(map(View.__microStr__, tree))

        return ViewClient.__levenshteinDistance(s1, s2)