Created
September 8, 2020 13:52
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$ python | |
Python 3.8.2 (default, Jul 16 2020, 14:00:26) | |
[GCC 9.3.0] on linux | |
Type "help", "copyright", "credits" or "license" for more information. | |
>>> import time | |
>>> commons_pids = list(range(1, 50)) | |
>>> entity_pids = list(range(50, 100)) | |
>>> def linear_scan(): | |
... for val in entity_pids: | |
... if val in commons_pids: | |
... return True | |
... | |
>>> entity_pids_set = set(entity_pids) | |
>>> commons_pids_set = set(commons_pids) | |
>>> def set_scan(): | |
... return len(entity_pids_set & commons_pids_set) > 0 | |
... | |
>>> start = time.time(); len([set_scan() for i in range(1000)]); print(time.time() - start) | |
1000 | |
0.0016851425170898438 | |
>>> start = time.time(); len([linear_scan() for i in range(1000)]); print(time.time() - start) | |
1000 | |
0.030255556106567383 |
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