Finish the Python style, typing and docstring pass across the
ordinary, parallelism, Trio and integration examples.
Preserve each demo's runtime behavior while tightening callable,
portal, stream and nursery annotations. Use the modern `.chan`
portal attr and current actor-lifecycle terminology.
(this patch was generated in some part by `opencode` using `gpt-5.6-sol` (`openai`))
Finish the examples-typing sweep with the last non-docs-visible
scripts: `-> None` on the two `trio/` behavior-demo mains (plus a
`trio.TaskStatus` on `hold_lock_forever`) and nursery/portal typing
on `integration/mpi4py/inherit_parent_main.py`.
Leaves `concurrent_futures_primes` (a verbatim stdlib baseline) and
`integration/open_context_and_sleep` (its tractor nursery is
commented out) as-is, and the paren-group `trio.open_nursery()`
bindings unannotated (no clean spot for a preceding annotation).
Completes the examples-typing bullet in #472.
(this patch was generated in some part by [`claude-code`][claude-code-gh])
[claude-code-gh]: https://github.com/anthropics/claude-code
So we can parametrize in various toggles to `main()` including,
- `child_errors_mid_stream: bool` which now also drives whether an
additional, and otherwise non-affecting, `_tn` is allocated in
the `finite_stream_to_rent()` subtask, only in the early stream
termination case does it seem to produce a masked outcome?
* see surrounding notes within.
- `raise_unmasked: bool` to toggle whether the embedded unmasker fn
will actually raise the masked user RTE; this enables demoing the
masked outcomes via simple switch and makes it easy to wrap them
as `pytest.xfail()` outcomes.
Also in support,
- use `.trionics.collapse_eg()` around the root tn to ensure when
unmasking we can catch the EG-unwrapped RTE easily from a test.
- flip stream `msg` logs to `.debug()` to reduce console noise.
- tweak mod's script iface to report/trace unexpected non-RTEs.
Gud Boi
Tyler Goodlet