Created
May 7, 2020 14:19
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(async)Racing show in less then 50 lines
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| ''' | |
| Made at 2020-05-07 15:31:52 | |
| Asyncio Racing Show | |
| run with: | |
| $ clear; python3 -uB comp.py | |
| ''' | |
| import asyncio, random, queue | |
| failed_runners = queue.Queue() | |
| flag = False | |
| async def runner(name): | |
| global flag, failed_runners | |
| for i in range(5): | |
| await asyncio.sleep(random.randint(1,2)/100) | |
| if not flag: # if nobody grabbed the flag -> I won. | |
| flag = f' Mister {name}' | |
| print(f' flag is taken by Mr.{name}\n') | |
| else: # if flag is gone -> I failed. | |
| failed_runners.put(f'Finished, but failed "Mr.{name}"') | |
| async def checker(): | |
| global flag, failed_runners | |
| print('START of COMPETITION') | |
| while not flag: | |
| await asyncio.sleep(.001) # let's wait for flag state more | |
| # show failers | |
| if not failed_runners.empty(): | |
| print (' list of failers:') | |
| while not failed_runners.empty(): | |
| item = failed_runners.get() | |
| if item is not None: print(f' >>> {item}') | |
| else: break | |
| # show winner | |
| print(' ', '-'*30, f'\n WINNER is {flag.strip()}! Congrats!') | |
| print('\nEND OF COMPETITION') | |
| print('global START\n') | |
| loop = asyncio.get_event_loop() | |
| loop.run_until_complete(asyncio.gather(*[runner(i) for i in range(60)], checker())) | |
| loop.close() | |
| print('\nglobal END') |
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