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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 expand_range(arg, value_delimiter=',', range_delimiter='-'):
 """ Expands a delimited string of ranged integers into a list of strings :param arg: The string range to expand :param value_delimiter: The delimiter that separates values :param range_delimiter: The delimiter that signifies a range of values :return: An array of expanded string values :rtype: list """

    values = list()
    expanded = arg.split(value_delimiter)
    for item in expanded:
        if range_delimiter in item:
            start, end = item.split(range_delimiter)
            _expand = range(int(start), int(end) + 1)
            values.extend([str(x) for x in _expand])
        else:
            values.extend([item])
    return [str(x) for x in values]