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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 _override_options(options, **overrides):
 """Override options."""

    for opt, val in overrides.items():
        passed_value = getattr(options, opt, _Default())
        if opt in ('ignore', 'select') and passed_value:
            value = process_value(opt, passed_value.value)
            value += process_value(opt, val)
            setattr(options, opt, value)
        elif isinstance(passed_value, _Default):
            setattr(options, opt, process_value(opt, val))