ch11-24: clean up by @eumiro & sync with Atlas

20-concurrency/primes/spinner_prime_async_broken.py

@@ -24,7 +24,7 @@ async def check(n: int) -> int:
 
 async def supervisor(n: int) -> int:
     spinner = asyncio.create_task(spin('thinking!'))  # <1>
-    print(f'spinner object: {spinner}')  # <2>
+    print('spinner object:', spinner)  # <2>
     result = await check(n)  # <3>
     spinner.cancel()  # <5>
     return result

20-concurrency/primes/spinner_prime_async_nap.py

@@ -43,7 +43,7 @@ async def check(n: int) -> int:
 
 async def supervisor(n: int) -> int:
     spinner = asyncio.create_task(spin('thinking!'))  # <1>
-    print(f'spinner object: {spinner}')  # <2>
+    print('spinner object:', spinner)  # <2>
     result = await check(n)  # <3>
     spinner.cancel()  # <5>
     return result

20-concurrency/primes/threads_py37.py

@@ -1,39 +0,0 @@
-from queue import SimpleQueue
-from time import perf_counter
-from threading import Thread
-from typing import List, NamedTuple
-
-from primes import is_prime, NUMBERS
-
-class Result(NamedTuple):  # <3>
-    flag: bool
-    elapsed: float
-
-def check(n: int) -> Result:  # <5>
-    t0 = perf_counter()
-    res = is_prime(n)
-    return Result(res, perf_counter() - t0)
-
-def job(n: int, results: SimpleQueue) -> None:  # <6>
-    results.put((n, check(n)))  # <7>
-
-def main() -> None:
-    t0 = perf_counter()
-    results = SimpleQueue()  # type: ignore
-    workers: List[Thread] = []  # <2>
-
-    for n in NUMBERS:
-        worker = Thread(target=job, args=(n, results))  # <3>
-        worker.start()  # <4>
-        workers.append(worker)  # <5>
-
-    for _ in workers:  # <6>
-        n, (prime, elapsed) = results.get()  # <7>
-        label = 'P' if prime else ' '
-        print(f'{n:16}  {label} {elapsed:9.6f}s')
-
-    elapsed = perf_counter() - t0
-    print(f'Total time: {elapsed:.2f}s')
-
-if __name__ == '__main__':
-    main()