Last active
September 23, 2019 02:18
-
-
Save emr-arvig/d74a05fa036b3785458061ec1016cb45 to your computer and use it in GitHub Desktop.
Multiprocessing callback example
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| from multiprocessing import Pool | |
| RESULTS = [] | |
| CALLBACK_DATA = [] | |
| def mycallback(x): | |
| print('mycallback is called with {}'.format(x)) | |
| CALLBACK_DATA.append(x) | |
| def multiply_by_two(x): | |
| return int(x) * 2 | |
| MP_POOL=Pool(processes=5) | |
| for x in range(1, 10): | |
| MP_APPLY = MP_POOL.apply_async(multiply_by_two, (x,), callback=mycallback) | |
| RESULTS.append(MP_APPLY) | |
| for MP_APPLY in RESULTS: | |
| MP_APPLY.wait() | |
| #pool.join() | |
| #pool.close() | |
| print('callback data') | |
| print(sorted(CALLBACK_DATA)) |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment