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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 parse_options(cls, options):
 """Pass options through to this plugin."""

    cls.ignore_decorators = options.ignore_decorators
    cls.exclude_from_doctest = options.exclude_from_doctest
    if not isinstance(cls.exclude_from_doctest, list):
      cls.exclude_from_doctest = [cls.exclude_from_doctest]