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25 lines
844 B
25 lines
844 B
"""
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This module exists solely to figure how long a registrant/publication
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number may be within an SBN. It's the same as the ISBN implementation
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for ean 978, reg_group 0.
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"""
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from collections import namedtuple
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from typing import List
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RegistrantRule = namedtuple("RegistrantRule", ["min", "max", "registrant_length"])
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# Structure: RULES = [Rule1, Rule2, ...]
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RULES: List[RegistrantRule] = [
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RegistrantRule("0000000", "1999999", 2),
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RegistrantRule("2000000", "2279999", 3),
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RegistrantRule("2280000", "2289999", 4),
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RegistrantRule("2290000", "6479999", 3),
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RegistrantRule("6480000", "6489999", 7),
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RegistrantRule("6490000", "6999999", 3),
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RegistrantRule("7000000", "8499999", 4),
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RegistrantRule("8500000", "8999999", 5),
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RegistrantRule("9000000", "9499999", 6),
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RegistrantRule("9500000", "9999999", 7),
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]
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