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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 escape(cls, string):
 """ Utility method to produce an escaped version of a given string. :param string: The string to escape. :returns: The escaped version of the string. """


        return ''.join([cls._escapes[c] if cls._needescape(c) else c
                        for c in string.encode('utf8')])