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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 hll_count(expr, error_rate=0.01, splitter=None):
 """ Calculate HyperLogLog count :param expr: :param error_rate: error rate :type error_rate: float :param splitter: the splitter to split the column value :return: sequence or scalar :Example: 63270 63250 """


    # to make the class pickled right by the cloudpickle
    with open(os.path.join(path, 'lib', 'hll.py')) as hll_file:
        local = {}
        six.exec_(hll_file.read(), local)
        HyperLogLog = local['HyperLogLog']

        return expr.agg(HyperLogLog, rtype=types.int64, args=(error_rate, splitter))