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pythondev
help
I like trying to scale "horizontally"
2017-12-20T14:35:25.000315
Winnifred
pythondev_help_Winnifred_2017-12-20T14:35:25.000315
1,513,780,525.000315
105,403
pythondev
help
if you want speed with ProcessPoolExecutor: try to reduce the amount of data transmitted Giving each worker a huge data structure and getting it back is generally not good Giving a small piece of data so that each worker completes in about 0.1s is generally not good too
2017-12-20T14:35:26.000238
Suellen
pythondev_help_Suellen_2017-12-20T14:35:26.000238
1,513,780,526.000238
105,404
pythondev
help
It really depends on what your worker function does
2017-12-20T14:35:40.000498
Collette
pythondev_help_Collette_2017-12-20T14:35:40.000498
1,513,780,540.000498
105,405
pythondev
help
Sounds good. The worker function checks at a certain index in a list if it exists, then have some Regex that grabs a piece of it
2017-12-20T14:36:05.000457
Myong
pythondev_help_Myong_2017-12-20T14:36:05.000457
1,513,780,565.000457
105,406
pythondev
help
And which pool you're using
2017-12-20T14:36:07.000178
Collette
pythondev_help_Collette_2017-12-20T14:36:07.000178
1,513,780,567.000178
105,407
pythondev
help
I'm basically converting lat and long in degrees minutes seconds to lat and long in decimal form
2017-12-20T14:36:24.000175
Myong
pythondev_help_Myong_2017-12-20T14:36:24.000175
1,513,780,584.000175
105,408
pythondev
help
for a few thousand entries
2017-12-20T14:36:28.000429
Myong
pythondev_help_Myong_2017-12-20T14:36:28.000429
1,513,780,588.000429
105,409
pythondev
help
I'm using processprool atm
2017-12-20T14:36:41.000606
Myong
pythondev_help_Myong_2017-12-20T14:36:41.000606
1,513,780,601.000606
105,410
pythondev
help
<@Myong> if you'll chunk the data by cpu cores, don't forget about grouper recipe from <https://docs.python.org/3/library/itertools.html>
2017-12-20T14:37:01.000738
Collette
pythondev_help_Collette_2017-12-20T14:37:01.000738
1,513,780,621.000738
105,411
pythondev
help
eli5: when would you guys use processpool vs. threadpool? what's the core difference?
2017-12-20T14:37:31.000499
Winnifred
pythondev_help_Winnifred_2017-12-20T14:37:31.000499
1,513,780,651.000499
105,412
pythondev
help
And try switching to ThreadPoolExecutor - it may reduce execution times significantly
2017-12-20T14:37:44.000446
Collette
pythondev_help_Collette_2017-12-20T14:37:44.000446
1,513,780,664.000446
105,413
pythondev
help
I think it's based on IO and CPU usage
2017-12-20T14:37:58.000390
Myong
pythondev_help_Myong_2017-12-20T14:37:58.000390
1,513,780,678.00039
105,414
pythondev
help
Okay will do
2017-12-20T14:38:07.000432
Myong
pythondev_help_Myong_2017-12-20T14:38:07.000432
1,513,780,687.000432
105,415
pythondev
help
<@Collette> GIL though
2017-12-20T14:38:58.000321
Suellen
pythondev_help_Suellen_2017-12-20T14:38:58.000321
1,513,780,738.000321
105,416
pythondev
help
GIL only applies to bytecode execution
2017-12-20T14:39:42.000320
Collette
pythondev_help_Collette_2017-12-20T14:39:42.000320
1,513,780,782.00032
105,417
pythondev
help
What should i be using groupby for?
2017-12-20T14:39:50.000117
Myong
pythondev_help_Myong_2017-12-20T14:39:50.000117
1,513,780,790.000117
105,418
pythondev
help
doesn't kbman intend to compute stuff massively?
2017-12-20T14:40:16.000208
Suellen
pythondev_help_Suellen_2017-12-20T14:40:16.000208
1,513,780,816.000208
105,419
pythondev
help
If you do lots of math via numpy or `math` (which are basically C), you may be avoiding GIL at all
2017-12-20T14:40:54.000488
Collette
pythondev_help_Collette_2017-12-20T14:40:54.000488
1,513,780,854.000488
105,420
pythondev
help
I'm, for the most part, only doing regex
2017-12-20T14:41:16.000004
Myong
pythondev_help_Myong_2017-12-20T14:41:16.000004
1,513,780,876.000004
105,421
pythondev
help
:thinking_face: makes sense
2017-12-20T14:41:17.000193
Suellen
pythondev_help_Suellen_2017-12-20T14:41:17.000193
1,513,780,877.000193
105,422
pythondev
help
oh
2017-12-20T14:41:21.000019
Suellen
pythondev_help_Suellen_2017-12-20T14:41:21.000019
1,513,780,881.000019
105,423
pythondev
help
But it's a pretty crazy regex token though it picks up everthing I need
2017-12-20T14:41:42.000576
Myong
pythondev_help_Myong_2017-12-20T14:41:42.000576
1,513,780,902.000576
105,424
pythondev
help
oh? lemme see that regex pattern I love me some regex
2017-12-20T14:42:30.000657
Ozie
pythondev_help_Ozie_2017-12-20T14:42:30.000657
1,513,780,950.000657
105,425
pythondev
help
unless you already posted it
2017-12-20T14:42:39.000032
Ozie
pythondev_help_Ozie_2017-12-20T14:42:39.000032
1,513,780,959.000032
105,426
pythondev
help
`[-+]?[.]?[\d]+(?:,\d\d\d)*[\.]?\d*(?:[eE][-+]?\d+)`
2017-12-20T14:42:59.000409
Myong
pythondev_help_Myong_2017-12-20T14:42:59.000409
1,513,780,979.000409
105,427
pythondev
help
It catches all floats and integers
2017-12-20T14:43:06.000423
Myong
pythondev_help_Myong_2017-12-20T14:43:06.000423
1,513,780,986.000423
105,428
pythondev
help
all your values have the `e` for exponent?
2017-12-20T14:45:02.000676
Ozie
pythondev_help_Ozie_2017-12-20T14:45:02.000676
1,513,781,102.000676
105,429
pythondev
help
No they do not I am gonna get rid of that
2017-12-20T14:45:15.000331
Myong
pythondev_help_Myong_2017-12-20T14:45:15.000331
1,513,781,115.000331
105,430
pythondev
help
yeeee
2017-12-20T14:45:21.000058
Ozie
pythondev_help_Ozie_2017-12-20T14:45:21.000058
1,513,781,121.000058
105,431
pythondev
help
It was just from stack overflow
2017-12-20T14:45:21.000355
Myong
pythondev_help_Myong_2017-12-20T14:45:21.000355
1,513,781,121.000355
105,432
pythondev
help
no ngetatives either
2017-12-20T14:45:31.000389
Myong
pythondev_help_Myong_2017-12-20T14:45:31.000389
1,513,781,131.000389
105,433
pythondev
help
i threw it at <https://regexr.com/> it's my go to for easy tests
2017-12-20T14:45:34.000344
Ozie
pythondev_help_Ozie_2017-12-20T14:45:34.000344
1,513,781,134.000344
105,434
pythondev
help
Pretty noob question here: I'm going through a tutorial and got stuck at linking models because I keep getting FOREIGN KEY constraints failure. How am I supposed to construct a foreign key in models?
2017-12-20T14:46:21.000362
Nathalie
pythondev_help_Nathalie_2017-12-20T14:46:21.000362
1,513,781,181.000362
105,435
pythondev
help
`[-+]?[.]?[\d]+(?:,\d\d\d)*[\.]?\d` this works
2017-12-20T14:47:24.000217
Myong
pythondev_help_Myong_2017-12-20T14:47:24.000217
1,513,781,244.000217
105,436
pythondev
help
what about `1`
2017-12-20T14:47:51.000167
Ozie
pythondev_help_Ozie_2017-12-20T14:47:51.000167
1,513,781,271.000167
105,437
pythondev
help
it wont pick it up
2017-12-20T14:47:56.000068
Ozie
pythondev_help_Ozie_2017-12-20T14:47:56.000068
1,513,781,276.000068
105,438
pythondev
help
o
2017-12-20T14:48:06.000473
Myong
pythondev_help_Myong_2017-12-20T14:48:06.000473
1,513,781,286.000473
105,439
pythondev
help
breaking regexes is clearly more interesting than fixing this bug i should be fixing
2017-12-20T14:48:35.000126
Ozie
pythondev_help_Ozie_2017-12-20T14:48:35.000126
1,513,781,315.000126
105,440
pythondev
help
Not sure where that one is messing up
2017-12-20T14:48:50.000109
Myong
pythondev_help_Myong_2017-12-20T14:48:50.000109
1,513,781,330.000109
105,441
pythondev
help
It doesn't match any single digit number
2017-12-20T14:49:24.000034
Myong
pythondev_help_Myong_2017-12-20T14:49:24.000034
1,513,781,364.000034
105,442
pythondev
help
no bueno
2017-12-20T14:49:39.000180
Myong
pythondev_help_Myong_2017-12-20T14:49:39.000180
1,513,781,379.00018
105,443
pythondev
help
lol append a `|(\d)`
2017-12-20T14:49:39.000397
Ozie
pythondev_help_Ozie_2017-12-20T14:49:39.000397
1,513,781,379.000397
105,444
pythondev
help
the least elegant
2017-12-20T14:49:50.000075
Ozie
pythondev_help_Ozie_2017-12-20T14:49:50.000075
1,513,781,390.000075
105,445
pythondev
help
easy enough
2017-12-20T14:50:21.000129
Myong
pythondev_help_Myong_2017-12-20T14:50:21.000129
1,513,781,421.000129
105,446
pythondev
help
Will that provide the same output
2017-12-20T14:50:31.000035
Myong
pythondev_help_Myong_2017-12-20T14:50:31.000035
1,513,781,431.000035
105,447
pythondev
help
or does that create another group with `re.finall()`
2017-12-20T14:50:41.000591
Myong
pythondev_help_Myong_2017-12-20T14:50:41.000591
1,513,781,441.000591
105,448
pythondev
help
oh it would def create another group
2017-12-20T14:50:59.000017
Ozie
pythondev_help_Ozie_2017-12-20T14:50:59.000017
1,513,781,459.000017
105,449
pythondev
help
that was a solution, but not a good solution
2017-12-20T14:51:13.000188
Ozie
pythondev_help_Ozie_2017-12-20T14:51:13.000188
1,513,781,473.000188
105,450
pythondev
help
no it works actually
2017-12-20T14:51:32.000180
Myong
pythondev_help_Myong_2017-12-20T14:51:32.000180
1,513,781,492.00018
105,451
pythondev
help
gives me a single list
2017-12-20T14:51:39.000334
Myong
pythondev_help_Myong_2017-12-20T14:51:39.000334
1,513,781,499.000334
105,452
pythondev
help
nice, i still think there's an elegant way to do that
2017-12-20T14:51:58.000202
Ozie
pythondev_help_Ozie_2017-12-20T14:51:58.000202
1,513,781,518.000202
105,453
pythondev
help
what if you delete that last `\d`
2017-12-20T14:52:20.000376
Ozie
pythondev_help_Ozie_2017-12-20T14:52:20.000376
1,513,781,540.000376
105,454
pythondev
help
i think that's what makes it require 2 numbers
2017-12-20T14:52:35.000288
Ozie
pythondev_help_Ozie_2017-12-20T14:52:35.000288
1,513,781,555.000288
105,455
pythondev
help
Might have to go with original one :confused:
2017-12-20T14:53:01.000280
Myong
pythondev_help_Myong_2017-12-20T14:53:01.000280
1,513,781,581.00028
105,456
pythondev
help
almost positive
2017-12-20T14:53:01.000460
Ozie
pythondev_help_Ozie_2017-12-20T14:53:01.000460
1,513,781,581.00046
105,457
pythondev
help
`[-+]?[.]?[\d]+(?:,\d\d\d)*[\.]?` as opposed to `[-+]?[.]?[\d]+(?:,\d\d\d)*[\.]?\d`
2017-12-20T14:53:21.000731
Ozie
pythondev_help_Ozie_2017-12-20T14:53:21.000731
1,513,781,601.000731
105,458
pythondev
help
Yeah the thing is that I need to catch decimals also
2017-12-20T14:54:15.000593
Myong
pythondev_help_Myong_2017-12-20T14:54:15.000593
1,513,781,655.000593
105,459
pythondev
help
The original very first one does exactly what I need
2017-12-20T14:54:27.000726
Myong
pythondev_help_Myong_2017-12-20T14:54:27.000726
1,513,781,667.000726
105,460
pythondev
help
and it's actually pretty quick
2017-12-20T14:54:34.000227
Myong
pythondev_help_Myong_2017-12-20T14:54:34.000227
1,513,781,674.000227
105,461
pythondev
help
We shall see I appreciate the help
2017-12-20T14:54:41.000418
Myong
pythondev_help_Myong_2017-12-20T14:54:41.000418
1,513,781,681.000418
105,462
pythondev
help
right on, for me that first one `[-+]?[.]?[\d]+(?:,\d\d\d)*[\.]?\d*(?:[eE][-+]?\d+)` seemed to require the `e` for exponent
2017-12-20T14:55:11.000056
Ozie
pythondev_help_Ozie_2017-12-20T14:55:11.000056
1,513,781,711.000056
105,463
pythondev
help
`[-+]?[.]?[\d]+(?:,\d\d\d)*[\.]?\d*` this part seems fine though
2017-12-20T14:55:45.000802
Ozie
pythondev_help_Ozie_2017-12-20T14:55:45.000802
1,513,781,745.000802
105,464
pythondev
help
i appreciate the distraction haha
2017-12-20T14:55:55.000679
Ozie
pythondev_help_Ozie_2017-12-20T14:55:55.000679
1,513,781,755.000679
105,465
pythondev
help
Hi everyone, I was wondering, is there a good place to find help for locust related scripts?
2017-12-20T16:44:26.000337
Mara
pythondev_help_Mara_2017-12-20T16:44:26.000337
1,513,788,266.000337
105,466
pythondev
help
what do you guys like for a minimal queuing system? I am not sure if we need the "distributed" nature of something like celery yet. But if its an easy setup it could be fine. I also saw RQ as well. I am going to try a minimal example setup for processing some work in python through a queue and using docker. we are tryi...
2017-12-20T17:06:14.000106
Bruno
pythondev_help_Bruno_2017-12-20T17:06:14.000106
1,513,789,574.000106
105,467
pythondev
help
i used python-rq for a long time but after learning celery i probably would have just used celery.
2017-12-20T17:10:05.000076
Johana
pythondev_help_Johana_2017-12-20T17:10:05.000076
1,513,789,805.000076
105,468
pythondev
help
the Python Cookbook has some really good examples too.
2017-12-20T17:10:14.000129
Johana
pythondev_help_Johana_2017-12-20T17:10:14.000129
1,513,789,814.000129
105,469
pythondev
help
if you want something minimal.
2017-12-20T17:10:20.000018
Johana
pythondev_help_Johana_2017-12-20T17:10:20.000018
1,513,789,820.000018
105,470
pythondev
help
ok cool. so celery is easy to get setup? ill have to check out the cookbook
2017-12-20T17:11:21.000174
Bruno
pythondev_help_Bruno_2017-12-20T17:11:21.000174
1,513,789,881.000174
105,471
pythondev
help
does celery need redis? using docker, would it need to talk with a redis container for storage?
2017-12-20T17:11:59.000466
Bruno
pythondev_help_Bruno_2017-12-20T17:11:59.000466
1,513,789,919.000466
105,472
pythondev
help
I was curious about the function return type annotations. My Python book used them throughout but I almost never seen it in real code, is it some thing that is generally ignored?
2017-12-20T17:25:24.000233
Callie
pythondev_help_Callie_2017-12-20T17:25:24.000233
1,513,790,724.000233
105,473
pythondev
help
celery needs some kind of broker.
2017-12-20T17:25:49.000293
Johana
pythondev_help_Johana_2017-12-20T17:25:49.000293
1,513,790,749.000293
105,474
pythondev
help
you can use redis or rabbitmq.
2017-12-20T17:26:09.000327
Johana
pythondev_help_Johana_2017-12-20T17:26:09.000327
1,513,790,769.000327
105,475
pythondev
help
oh i was thinking rabbitmq was synonymous with celery
2017-12-20T17:28:58.000120
Bruno
pythondev_help_Bruno_2017-12-20T17:28:58.000120
1,513,790,938.00012
105,476
pythondev
help
nope, it’s a broker. they are often used together so probably why you thought that.
2017-12-20T17:29:44.000008
Johana
pythondev_help_Johana_2017-12-20T17:29:44.000008
1,513,790,984.000008
105,477
pythondev
help
ah
2017-12-20T17:29:58.000150
Bruno
pythondev_help_Bruno_2017-12-20T17:29:58.000150
1,513,790,998.00015
105,478
pythondev
help
when you instantiate celery you pass the connection string to the broker.
2017-12-20T17:30:15.000087
Johana
pythondev_help_Johana_2017-12-20T17:30:15.000087
1,513,791,015.000087
105,479
pythondev
help
hmm. in node theres a library called `kue` which is nice since we just import it, and it talks to redis directly to handle the queue.
2017-12-20T17:30:47.000002
Bruno
pythondev_help_Bruno_2017-12-20T17:30:47.000002
1,513,791,047.000002
105,480
pythondev
help
ah ok.
2017-12-20T17:30:58.000313
Bruno
pythondev_help_Bruno_2017-12-20T17:30:58.000313
1,513,791,058.000313
105,481
pythondev
help
this is my celery config. some of the tasks are loading the database with data as others are computing student mastery of topics and other things. <https://github.com/openstax/biglearn-sparfa-server/blob/master/sparfa_server/celery.py>
2017-12-20T17:32:26.000020
Johana
pythondev_help_Johana_2017-12-20T17:32:26.000020
1,513,791,146.00002
105,482
pythondev
help
aside from that you add a task decorator to whatever functions you want to execute async and that’s about it.
2017-12-20T17:34:31.000324
Johana
pythondev_help_Johana_2017-12-20T17:34:31.000324
1,513,791,271.000324
105,483
pythondev
help
oh and you have to make sure to run your celery workers process and then run your celery beat process
2017-12-20T17:37:07.000324
Johana
pythondev_help_Johana_2017-12-20T17:37:07.000324
1,513,791,427.000324
105,484
pythondev
help
if you want to use celery-beat
2017-12-20T17:37:22.000215
Johana
pythondev_help_Johana_2017-12-20T17:37:22.000215
1,513,791,442.000215
105,485
pythondev
help
when using the decorator, it puts the funtion into the queue based on when it does I/O ?
2017-12-20T17:37:33.000248
Bruno
pythondev_help_Bruno_2017-12-20T17:37:33.000248
1,513,791,453.000248
105,486
pythondev
help
or just when the function is called
2017-12-20T17:38:03.000069
Bruno
pythondev_help_Bruno_2017-12-20T17:38:03.000069
1,513,791,483.000069
105,487
pythondev
help
the latter, wherever you decide to use it in code you will have `.delay()` method.
2017-12-20T17:38:27.000229
Johana
pythondev_help_Johana_2017-12-20T17:38:27.000229
1,513,791,507.000229
105,488
pythondev
help
my_async_function.delay()
2017-12-20T17:38:47.000032
Johana
pythondev_help_Johana_2017-12-20T17:38:47.000032
1,513,791,527.000032
105,489
pythondev
help
oh wait, with the config. i think i see. so the config is basically scheduling these "loaders" to run at given intervals?
2017-12-20T17:38:48.000027
Bruno
pythondev_help_Bruno_2017-12-20T17:38:48.000027
1,513,791,528.000027
105,490
pythondev
help
yep, that part is using celery-beat.
2017-12-20T17:38:59.000179
Johana
pythondev_help_Johana_2017-12-20T17:38:59.000179
1,513,791,539.000179
105,491
pythondev
help
ah ok.
2017-12-20T17:39:01.000511
Bruno
pythondev_help_Bruno_2017-12-20T17:39:01.000511
1,513,791,541.000511
105,492
pythondev
help
if you’re not running anything on a schedule you can ignore all that.
2017-12-20T17:39:15.000093
Johana
pythondev_help_Johana_2017-12-20T17:39:15.000093
1,513,791,555.000093
105,493
pythondev
help
ok. so thats more like running it as a cron setup?
2017-12-20T17:39:19.000408
Bruno
pythondev_help_Bruno_2017-12-20T17:39:19.000408
1,513,791,559.000408
105,494
pythondev
help
yea, you can use cron syntax or some others iirc.
2017-12-20T17:39:45.000247
Johana
pythondev_help_Johana_2017-12-20T17:39:45.000247
1,513,791,585.000247
105,495
pythondev
help
well, thats interesting. part of this is running on a cron like setup. but that, is processing some data and when work needs to be done, we want to send that to another queue so workers can process it.
2017-12-20T17:40:04.000309
Bruno
pythondev_help_Bruno_2017-12-20T17:40:04.000309
1,513,791,604.000309
105,496
pythondev
help
currently this is all in one shitty service and managed through a Thread.js file and is messy. so were going to rebuild it and looking at using node or python. im pushing for python.
2017-12-20T17:41:00.000294
Bruno
pythondev_help_Bruno_2017-12-20T17:41:00.000294
1,513,791,660.000294
105,497
pythondev
help
sounds like it would be achievable in celery.
2017-12-20T17:41:44.000201
Johana
pythondev_help_Johana_2017-12-20T17:41:44.000201
1,513,791,704.000201
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pythondev
help
so the "thread" is run and looks to see if anything needs to be processed. if it does, it preps it, then starts up to 10 threads to do the work.
2017-12-20T17:41:56.000101
Bruno
pythondev_help_Bruno_2017-12-20T17:41:56.000101
1,513,791,716.000101
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pythondev
help
those threads doing the work, we just want as workers to monitor a queue to see when work needs to be done.
2017-12-20T17:42:25.000191
Bruno
pythondev_help_Bruno_2017-12-20T17:42:25.000191
1,513,791,745.000191
105,500
pythondev
help
yea, that’s why we have the different queues. you can create different ones for different workers.. you can add priority and other things.
2017-12-20T17:43:09.000482
Johana
pythondev_help_Johana_2017-12-20T17:43:09.000482
1,513,791,789.000482
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pythondev
help
ok cool. so why did you switch from RQ to celery?
2017-12-20T17:43:40.000482
Bruno
pythondev_help_Bruno_2017-12-20T17:43:40.000482
1,513,791,820.000482
105,502