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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 _GetPredicate(self, pred_str, test_attr=False):
 """ The user's predicates are consulted first, then the default predicates. """

        predicate, args, func_type = self.predicates.LookupWithType(pred_str)
        if predicate:
            pred = predicate, args, func_type
        else:
            # Nicer syntax, {.debug?} is shorthand for {.if test debug}.
            # Currently there is not if/elif chain; just use
            # {.if test debug} {.or test release} {.or} {.end}
            if test_attr:
                assert pred_str.endswith('?')
                # func, args, func_type
                pred = (_TestAttribute, (pred_str[:-1],), ENHANCED_FUNC)
            else:
                raise BadPredicate('%r is not a valid predicate' % pred_str)
        return pred