How to Re-Order Acceptances

Individual acceptances can be combined together to create new acceptances with narrower or broader criteria (see Composability). When acceptances are combined, their criteria are applied in an order determined by their scope. Element-wise criteria are applied first, group-wise criteria are applied second, and whole-error criteria are applied last (see Order of Operations).

Implicit Ordering

In this first example, we have a combined acceptance made from a whole-error acceptance, accepted.count(), and a group-wise acceptance, accepted([...]):

with accepted.count(4) | accepted([Missing('A'), Missing('B')]):
    ...

Since the Order of Operations specifies that whole-error acceptances are applied after group-wise acceptances, the accepted.count(4) criteria is applied last even though it’s defined first.

Explicit Ordering

If you want to control this order explicitly, you can use nested with statements to change the default behavior:

with accepted([Missing('A'), Missing('B')]):
    with accepted.count(4):
        ...

Using nested with statements, the inner-most block is applied first and outer blocks are applied in order until the outer-most block is applied last. In this example, the accepted.count(4) is applied first because it’s declared in the inner-most block.