Exception tutorial confusion

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5

In general we value conciseness. We don’t need # Case D: match! because that’s the intended behavior.

I think using three classes for the example is overkill – we can shorten the example by nearly 1/3rd if we just use classes B and C. We then get:

class B(Exception):
    pass

class C(B):
    pass

for cls in [B, C]:
    try:
        raise cls()
    except C:
        # Matches C but not B.
        print("C")
    except B:
        # Matches B; not reached for C.
        print("B")

And I would explicitly write out the reversed example:

for cls in [B, C]:
    try:
        raise cls()
    except B:
        # Matches B and C both.
        print("B")
    except C:
        # Not reached (the previous clause ate B and C)
        print("C")
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