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pythondev | help | I’m sure. What the script does is it iterates through a folder of PDFs, printing each one out, and deleting it, and there was 1 PDF there lastnight, and it was still there now, this morning, and when I run the script manually it works correctly | 2019-02-23T12:30:04.359300 | Kristine | pythondev_help_Kristine_2019-02-23T12:30:04.359300 | 1,550,925,004.3593 | 10,121 |
pythondev | help | and it’s whatever “crontab -e” is, I admit I don’t actually know, I presume my user crontab. But like I said, I have a bunch of other entries there that are working. | 2019-02-23T12:30:43.360000 | Kristine | pythondev_help_Kristine_2019-02-23T12:30:43.360000 | 1,550,925,043.36 | 10,122 |
pythondev | help | That is your user crontab. | 2019-02-23T12:30:54.360200 | Carmen | pythondev_help_Carmen_2019-02-23T12:30:54.360200 | 1,550,925,054.3602 | 10,123 |
pythondev | help | Cool | 2019-02-23T12:31:27.360500 | Kristine | pythondev_help_Kristine_2019-02-23T12:31:27.360500 | 1,550,925,087.3605 | 10,124 |
pythondev | help | Do you have access to the system crontab log? | 2019-02-23T12:31:31.360700 | Carmen | pythondev_help_Carmen_2019-02-23T12:31:31.360700 | 1,550,925,091.3607 | 10,125 |
pythondev | help | Normally you need to have root access for that. | 2019-02-23T12:31:49.361300 | Carmen | pythondev_help_Carmen_2019-02-23T12:31:49.361300 | 1,550,925,109.3613 | 10,126 |
pythondev | help | Yeah, this is completely my own system that I administer. | 2019-02-23T12:31:52.361400 | Kristine | pythondev_help_Kristine_2019-02-23T12:31:52.361400 | 1,550,925,112.3614 | 10,127 |
pythondev | help | It’s Ubuntu Server 18 | 2019-02-23T12:32:03.361800 | Kristine | pythondev_help_Kristine_2019-02-23T12:32:03.361800 | 1,550,925,123.3618 | 10,128 |
pythondev | help | LTS | 2019-02-23T12:32:05.362000 | Kristine | pythondev_help_Kristine_2019-02-23T12:32:05.362000 | 1,550,925,125.362 | 10,129 |
pythondev | help | I'd take a look in there to see what errors it might be encountering. | 2019-02-23T12:32:21.362400 | Carmen | pythondev_help_Carmen_2019-02-23T12:32:21.362400 | 1,550,925,141.3624 | 10,130 |
pythondev | help | My first assumption is that there's a path issue coming up for some reason. | 2019-02-23T12:32:34.362700 | Carmen | pythondev_help_Carmen_2019-02-23T12:32:34.362700 | 1,550,925,154.3627 | 10,131 |
pythondev | help | You should also add some stderr redirection into a logfile to your entry, so you can more easily see when it encounters an error of some kind. | 2019-02-23T12:33:13.363500 | Carmen | pythondev_help_Carmen_2019-02-23T12:33:13.363500 | 1,550,925,193.3635 | 10,132 |
pythondev | help | And if you're doing that, stdout redirection is a good idea as well.
`0 0 * * * /usr/bin/python3 /home/fileserver/printletters.py > printletters-output.log 2>printletters-errors.log` | 2019-02-23T12:34:43.364300 | Carmen | pythondev_help_Carmen_2019-02-23T12:34:43.364300 | 1,550,925,283.3643 | 10,133 |
pythondev | help | And lastly, I'd set up a temporary crontab entry that runs it 2 minutes in the future, so you can get immediate feedback on what's happening. | 2019-02-23T12:35:29.365400 | Carmen | pythondev_help_Carmen_2019-02-23T12:35:29.365400 | 1,550,925,329.3654 | 10,134 |
pythondev | help | Okay I’m not sure how this is possible… The last few entries in syslog are showing `Feb 23 17:33:XX` but date shows `Sat Feb 23 09:34:39 PST 2019` | 2019-02-23T12:35:46.365700 | Kristine | pythondev_help_Kristine_2019-02-23T12:35:46.365700 | 1,550,925,346.3657 | 10,135 |
pythondev | help | Does syslog go by GMT or something? | 2019-02-23T12:36:02.366200 | Kristine | pythondev_help_Kristine_2019-02-23T12:36:02.366200 | 1,550,925,362.3662 | 10,136 |
pythondev | help | Syslog is probably using UTC for some reason. | 2019-02-23T12:36:09.366400 | Carmen | pythondev_help_Carmen_2019-02-23T12:36:09.366400 | 1,550,925,369.3664 | 10,137 |
pythondev | help | aah | 2019-02-23T12:36:12.366600 | Kristine | pythondev_help_Kristine_2019-02-23T12:36:12.366600 | 1,550,925,372.3666 | 10,138 |
pythondev | help | also I did try adding a log output lastnight to my crontab entry, I just omitted it a moment ago, and the log was empty | 2019-02-23T12:36:55.367600 | Kristine | pythondev_help_Kristine_2019-02-23T12:36:55.367600 | 1,550,925,415.3676 | 10,139 |
pythondev | help | Did you log stderr, or just stdout? | 2019-02-23T12:37:09.367900 | Carmen | pythondev_help_Carmen_2019-02-23T12:37:09.367900 | 1,550,925,429.3679 | 10,140 |
pythondev | help | Oh I just noticed a typo I made on it | 2019-02-23T12:37:34.368200 | Kristine | pythondev_help_Kristine_2019-02-23T12:37:34.368200 | 1,550,925,454.3682 | 10,141 |
pythondev | help | I meant to do `2>&1` but I have `2&1` | 2019-02-23T12:37:51.368600 | Kristine | pythondev_help_Kristine_2019-02-23T12:37:51.368600 | 1,550,925,471.3686 | 10,142 |
pythondev | help | The other fun one I often encounter is `2>1`. | 2019-02-23T12:38:27.369100 | Carmen | pythondev_help_Carmen_2019-02-23T12:38:27.369100 | 1,550,925,507.3691 | 10,143 |
pythondev | help | heh | 2019-02-23T12:38:32.369400 | Kristine | pythondev_help_Kristine_2019-02-23T12:38:32.369400 | 1,550,925,512.3694 | 10,144 |
pythondev | help | Then you get to look for the file `1`. | 2019-02-23T12:38:39.369700 | Carmen | pythondev_help_Carmen_2019-02-23T12:38:39.369700 | 1,550,925,519.3697 | 10,145 |
pythondev | help | `0 0 * * * /usr/bin/python3 /home/fileserver/printletters.py >> /home/fileserver/printscript.log 2>&1` <Hopefully that extra > will let it run. | 2019-02-23T12:39:25.370100 | Kristine | pythondev_help_Kristine_2019-02-23T12:39:25.370100 | 1,550,925,565.3701 | 10,146 |
pythondev | help | :+1: | 2019-02-23T12:41:31.370400 | Carmen | pythondev_help_Carmen_2019-02-23T12:41:31.370400 | 1,550,925,691.3704 | 10,147 |
pythondev | help | If not, you’ll see me back here tomorrow :stuck_out_tongue: | 2019-02-23T12:43:04.370700 | Kristine | pythondev_help_Kristine_2019-02-23T12:43:04.370700 | 1,550,925,784.3707 | 10,148 |
pythondev | help | Hey, quick question, I understand placeholders for numbers in a string I would use %d, for a string %s, but what would I use for a potential null value placeholder? My string is a SQL statement where a field could be null in some instances.
“insert statement example values(%d, %s, %d, null)” | 2019-02-23T14:41:35.373000 | Rosie | pythondev_help_Rosie_2019-02-23T14:41:35.373000 | 1,550,932,895.373 | 10,149 |
pythondev | help | Can anyone please help me, how to fix this | 2019-02-23T14:47:33.373100 | Leonor | pythondev_help_Leonor_2019-02-23T14:47:33.373100 | 1,550,933,253.3731 | 10,150 |
pythondev | help | never mind. one condition was not handled properly.
@b.setter
def b(self, b):
if b is None:
self.__b = ‘Im None’
elif b > 100:
self.__b = ‘APL’
elif b < -1:
self.__b = ‘BPL’
else:
self.__b = b | 2019-02-23T14:58:21.373400 | Leonor | pythondev_help_Leonor_2019-02-23T14:58:21.373400 | 1,550,933,901.3734 | 10,151 |
pythondev | help | <@Rosie> use `.format` instead, like this `"insert statement example values({}, '{}', {}, {})".format(a, b, c, d or "null")` | 2019-02-23T15:47:06.374300 | Ashley | pythondev_help_Ashley_2019-02-23T15:47:06.374300 | 1,550,936,826.3743 | 10,152 |
pythondev | help | Anyone here working with pyMongo? Trying to iterate over a large MongoDB collection in batches with the find_raw_batches() method, but it looks like it still pulls the full collection in memory and creates an iterator with the batch sizes. This makes my memory usage explode. Would be great to figure out a way to actually only pull in one batch at a time, handle the batch, lose the batch out of memory and then go back to the server for a new batch :thinking_face:
You can find the documentation here: <http://api.mongodb.com/python/current/api/pymongo/collection.html#pymongo.collection.Collection.find_raw_batches>. If we take this code, the count_documents already output all documents (more than the set batch_size), which tells me everything is already in memory before the loop.
Any ideas?
```
>>> import bson
>>> cursor = db.test.find_raw_batches()
>>> print(cursor.count_documents)
>>> for batch in cursor:
... print(bson.decode_all(batch))
``` | 2019-02-23T15:50:28.374700 | Dawn | pythondev_help_Dawn_2019-02-23T15:50:28.374700 | 1,550,937,028.3747 | 10,153 |
pythondev | help | maybe it functions like a generator, and by printing `cursor.count_documents`, you're forcing it to resolve and load everything into memory? | 2019-02-23T16:01:44.375700 | Ashley | pythondev_help_Ashley_2019-02-23T16:01:44.375700 | 1,550,937,704.3757 | 10,154 |
pythondev | help | I'm not familiar with mongodb, but that's just my guess | 2019-02-23T16:02:09.376200 | Ashley | pythondev_help_Ashley_2019-02-23T16:02:09.376200 | 1,550,937,729.3762 | 10,155 |
pythondev | help | Hm that's possible. But how would you check that :stuck_out_tongue: | 2019-02-23T16:06:10.376600 | Dawn | pythondev_help_Dawn_2019-02-23T16:06:10.376600 | 1,550,937,970.3766 | 10,156 |
pythondev | help | by not printing it and monitoring your memory usage | 2019-02-23T16:07:07.377600 | Ashley | pythondev_help_Ashley_2019-02-23T16:07:07.377600 | 1,550,938,027.3776 | 10,157 |
pythondev | help | Although if i count the documents in the for loop, the batches have the set batch size. I'm just wondering if everything is already in memory at that point | 2019-02-23T16:07:14.377900 | Dawn | pythondev_help_Dawn_2019-02-23T16:07:14.377900 | 1,550,938,034.3779 | 10,158 |
pythondev | help | maybe put a break point in so you can slow it down and give yourself time to check | 2019-02-23T16:07:26.378200 | Ashley | pythondev_help_Ashley_2019-02-23T16:07:26.378200 | 1,550,938,046.3782 | 10,159 |
pythondev | help | ¯\_(ツ)_/¯ | 2019-02-23T16:07:48.378300 | Ashley | pythondev_help_Ashley_2019-02-23T16:07:48.378300 | 1,550,938,068.3783 | 10,160 |
pythondev | help | Well the generator reasoning makes sense. I'll try to monitor my memory | 2019-02-23T16:08:45.378900 | Dawn | pythondev_help_Dawn_2019-02-23T16:08:45.378900 | 1,550,938,125.3789 | 10,161 |
pythondev | help | Thanks! | 2019-02-23T16:08:48.379100 | Dawn | pythondev_help_Dawn_2019-02-23T16:08:48.379100 | 1,550,938,128.3791 | 10,162 |
pythondev | help | np! | 2019-02-23T16:09:08.379300 | Ashley | pythondev_help_Ashley_2019-02-23T16:09:08.379300 | 1,550,938,148.3793 | 10,163 |
pythondev | help | Hi. I'm experiencing a strange issue with imports. I have two packages: `raven` and `youtube_dl` and I want to import both of them ```In [1]: import youtube_dl
In [2]:
``` works fine, but ```In [1]: import raven
In [2]: import youtube_dl
``` is throwing `TypeError: Struct() argument 1 must be string, not unicode` exception. It might be related to the fact that I'm using Python 2.7.5 (can't upgrade at the moment), but it works for me locally with Python 2.7.15. Do you have any ideas how to debug this? | 2019-02-23T16:38:12.382100 | Rosina | pythondev_help_Rosina_2019-02-23T16:38:12.382100 | 1,550,939,892.3821 | 10,164 |
pythondev | help | can you show the full stack trace? | 2019-02-23T16:47:56.382600 | Ashley | pythondev_help_Ashley_2019-02-23T16:47:56.382600 | 1,550,940,476.3826 | 10,165 |
pythondev | help | and have you tried importing them in the opposite order? | 2019-02-23T16:48:19.382900 | Ashley | pythondev_help_Ashley_2019-02-23T16:48:19.382900 | 1,550,940,499.3829 | 10,166 |
pythondev | help | thanks very much! | 2019-02-23T16:58:55.383000 | Rosie | pythondev_help_Rosie_2019-02-23T16:58:55.383000 | 1,550,941,135.383 | 10,167 |
pythondev | help | Yes, import in the opposite order works fine. Here's the stacktrace ```TypeError Traceback (most recent call last)
<ipython-input-2-be68cadeacc2> in <module>()
----> 1 import youtube_dl
.../env/lib/python2.7/site-packages/youtube_dl/__init__.py in <module>()
13
14
---> 15 from .options import (
16 parseOpts,
17 )
.../env/lib/python2.7/site-packages/youtube_dl/options.py in <module>()
6 import sys
7
----> 8 from .downloader.external import list_external_downloaders
9 from .compat import (
10 compat_expanduser,
.../env/lib/python2.7/site-packages/youtube_dl/downloader/__init__.py in <module>()
1 from __future__ import unicode_literals
2
----> 3 from .common import FileDownloader
4 from .f4m import F4mFD
5 from .hls import HlsFD
.../env/lib/python2.7/site-packages/youtube_dl/downloader/common.py in <module>()
8
9 from ..compat import compat_os_name
---> 10 from ..utils import (
11 decodeArgument,
12 encodeFilename,
.../env/lib/python2.7/site-packages/youtube_dl/utils.py in <module>()
64 )
65
---> 66 from .socks import (
67 ProxyType,
68 sockssocket,
.../env/lib/python2.7/site-packages/youtube_dl/socks.py in <module>()
27 # IP address, it should set the first three bytes of DSTIP to NULL and the last
28 # byte to a non-zero value.
---> 29 SOCKS4_DEFAULT_DSTIP = compat_struct_pack('!BBBB', 0, 0, 0, 0xFF)
30
31 SOCKS5_VERSION = 5
TypeError: Struct() argument 1 must be string, not unicode
``` | 2019-02-23T17:28:54.383900 | Rosina | pythondev_help_Rosina_2019-02-23T17:28:54.383900 | 1,550,942,934.3839 | 10,168 |
pythondev | help | <@Ashley> | 2019-02-23T17:29:09.384100 | Rosina | pythondev_help_Rosina_2019-02-23T17:29:09.384100 | 1,550,942,949.3841 | 10,169 |
pythondev | help | That `from __future__ import unicode literals` line looks pretty suspicious. | 2019-02-23T17:39:12.384900 | Sasha | pythondev_help_Sasha_2019-02-23T17:39:12.384900 | 1,550,943,552.3849 | 10,170 |
pythondev | help | That was my first guess, but on the other hand, it works fine if I try to import only this package :thinking_face: | 2019-02-23T17:48:33.385900 | Rosina | pythondev_help_Rosina_2019-02-23T17:48:33.385900 | 1,550,944,113.3859 | 10,171 |
pythondev | help | Do you know where the `Struct` class is coming from? Maybe something in `raven` is overriding that definition. | 2019-02-23T17:57:16.386700 | Sasha | pythondev_help_Sasha_2019-02-23T17:57:16.386700 | 1,550,944,636.3867 | 10,172 |
pythondev | help | None | 2019-02-23T21:33:09.387000 | Hai | pythondev_help_Hai_2019-02-23T21:33:09.387000 | 1,550,957,589.387 | 10,173 |
pythondev | help | <@Sasha> | 2019-02-23T21:44:28.387800 | Hai | pythondev_help_Hai_2019-02-23T21:44:28.387800 | 1,550,958,268.3878 | 10,174 |
pythondev | help | It looks like `iloc` allows a list of columns instead of slices, so you could pass in `[0, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20]` and the like to pick up batches of 10 along with column 0. | 2019-02-23T21:48:38.389300 | Sasha | pythondev_help_Sasha_2019-02-23T21:48:38.389300 | 1,550,958,518.3893 | 10,175 |
pythondev | help | I don't know anything about `sns.pairplot` though. | 2019-02-23T21:49:09.389700 | Sasha | pythondev_help_Sasha_2019-02-23T21:49:09.389700 | 1,550,958,549.3897 | 10,176 |
pythondev | help | is there any way rather then writint numbers can i use any for loop or while? | 2019-02-23T22:21:19.390300 | Hai | pythondev_help_Hai_2019-02-23T22:21:19.390300 | 1,550,960,479.3903 | 10,177 |
pythondev | help | sns.pairplot shows the grap of target and the regular data | 2019-02-23T22:21:39.390800 | Hai | pythondev_help_Hai_2019-02-23T22:21:39.390800 | 1,550,960,499.3908 | 10,178 |
pythondev | help | Sure, you can construct that list in a loop and pass it in as a variable... it doesn't need to be hard-coded. | 2019-02-23T22:26:24.391700 | Sasha | pythondev_help_Sasha_2019-02-23T22:26:24.391700 | 1,550,960,784.3917 | 10,179 |
pythondev | help | This makes your code vulnerable to SQL injection attacks, you should be using prepared statements instead | 2019-02-23T22:43:14.392000 | Edythe | pythondev_help_Edythe_2019-02-23T22:43:14.392000 | 1,550,961,794.392 | 10,180 |
pythondev | help | <https://stackoverflow.com/questions/41256648/select-multiple-ranges-of-columns-in-pandas-dataframe> | 2019-02-23T22:58:16.392300 | Raguel | pythondev_help_Raguel_2019-02-23T22:58:16.392300 | 1,550,962,696.3923 | 10,181 |
pythondev | help | Maybe this is what you are looking for? | 2019-02-23T22:58:23.392600 | Raguel | pythondev_help_Raguel_2019-02-23T22:58:23.392600 | 1,550,962,703.3926 | 10,182 |
pythondev | help | Anyone doing the practice round of Google kickstart 2019 ? | 2019-02-23T23:49:21.393400 | Sade | pythondev_help_Sade_2019-02-23T23:49:21.393400 | 1,550,965,761.3934 | 10,183 |
pythondev | help | <@Sasha> how would i make it as list?i mean how would i make 200columns as list? | 2019-02-23T23:51:21.394100 | Hai | pythondev_help_Hai_2019-02-23T23:51:21.394100 | 1,550,965,881.3941 | 10,184 |
pythondev | help | Something like this, I mean: | 2019-02-23T23:54:31.394200 | Sasha | pythondev_help_Sasha_2019-02-23T23:54:31.394200 | 1,550,966,071.3942 | 10,185 |
pythondev | help | How can I sort a list such that the corresponding elements of a second list are also swapped? | 2019-02-24T00:45:27.395800 | Olympia | pythondev_help_Olympia_2019-02-24T00:45:27.395800 | 1,550,969,127.3958 | 10,186 |
pythondev | help | You could `zip()` the two lists together, sort them as tuples, and then pull the values apart again. | 2019-02-24T00:53:06.396300 | Sasha | pythondev_help_Sasha_2019-02-24T00:53:06.396300 | 1,550,969,586.3963 | 10,187 |
pythondev | help | What is the optimal browser to use for simple Selenium scraping (with Javascript enabled), in regards to speed? Have been using Chromedriver so far | 2019-02-24T01:22:57.398000 | Conchita | pythondev_help_Conchita_2019-02-24T01:22:57.398000 | 1,550,971,377.398 | 10,188 |
pythondev | help | How can I speed up my python program ? | 2019-02-24T04:40:19.399100 | Sade | pythondev_help_Sade_2019-02-24T04:40:19.399100 | 1,550,983,219.3991 | 10,189 |
pythondev | help | 1. find the slowest part | 2019-02-24T04:50:13.401000 | Jettie | pythondev_help_Jettie_2019-02-24T04:50:13.401000 | 1,550,983,813.401 | 10,190 |
pythondev | help | 2. make it faster :)) It depends greatly on what you're doing | 2019-02-24T04:50:46.401700 | Jettie | pythondev_help_Jettie_2019-02-24T04:50:46.401700 | 1,550,983,846.4017 | 10,191 |
pythondev | help | maybe it's an inefficient algorithm, or maybe it's huge amount of numeric computations | 2019-02-24T04:51:23.402400 | Jettie | pythondev_help_Jettie_2019-02-24T04:51:23.402400 | 1,550,983,883.4024 | 10,192 |
pythondev | help | I use chrome personally. | 2019-02-24T07:39:14.403800 | Karoline | pythondev_help_Karoline_2019-02-24T07:39:14.403800 | 1,550,993,954.4038 | 10,193 |
pythondev | help | With python you will get slower programs that with languages that are "closer to the metal".
Usually the way to optimize for speed is finding the slowest part (as <@Jettie> has mentioned) and if after making sure your algorithm is optimal you still need faster software, then you should consider writing that part as an independent library on C, and use python bindings to integrate it with your python code. | 2019-02-24T08:45:11.404000 | Louella | pythondev_help_Louella_2019-02-24T08:45:11.404000 | 1,550,997,911.404 | 10,194 |
pythondev | help | I want to run a small python script for ever, is there something like free python code cloud hosting . I want to get remainder to mail when currency drops below certain usd value in a day | 2019-02-24T09:38:01.408700 | China | pythondev_help_China_2019-02-24T09:38:01.408700 | 1,551,001,081.4087 | 10,195 |
pythondev | help | AWS lambda offers 1 million requests and 400,000 GB Seconds of execution for free every month indefinitely. You can schedule a lambda function run at a custom rate. This seems to suit your purpose. | 2019-02-24T09:41:05.408800 | Meridith | pythondev_help_Meridith_2019-02-24T09:41:05.408800 | 1,551,001,265.4088 | 10,196 |
pythondev | help | <@Sade> as the others mentioned, find the slowest part, and try to speed it up. Consider things like algorithm time/size complexity (big O notation) to see if you're setting yourself up for problems. You can also explore things like multi-threading/parallelization. | 2019-02-24T10:06:46.411700 | Ashley | pythondev_help_Ashley_2019-02-24T10:06:46.411700 | 1,551,002,806.4117 | 10,197 |
pythondev | help | Can I do rerouting of packets using python? if yes, can someone give some idea | 2019-02-24T11:19:22.412900 | Elisha | pythondev_help_Elisha_2019-02-24T11:19:22.412900 | 1,551,007,162.4129 | 10,198 |
pythondev | help | <@Elisha> you mean like a proxy? | 2019-02-24T11:26:41.413800 | Ashley | pythondev_help_Ashley_2019-02-24T11:26:41.413800 | 1,551,007,601.4138 | 10,199 |
pythondev | help | <@Ashley> no, I am sending packets from a generator to a particular port and from that port, I want to reroute to another port. | 2019-02-24T11:31:17.415500 | Elisha | pythondev_help_Elisha_2019-02-24T11:31:17.415500 | 1,551,007,877.4155 | 10,200 |
pythondev | help | That sounds like a proxy | 2019-02-24T11:32:43.415800 | Ashley | pythondev_help_Ashley_2019-02-24T11:32:43.415800 | 1,551,007,963.4158 | 10,201 |
pythondev | help | You can have a server listening on that port, and then forwarding everything to another port | 2019-02-24T11:33:18.416600 | Ashley | pythondev_help_Ashley_2019-02-24T11:33:18.416600 | 1,551,007,998.4166 | 10,202 |
pythondev | help | None | 2019-02-24T11:33:54.416800 | Elisha | pythondev_help_Elisha_2019-02-24T11:33:54.416800 | 1,551,008,034.4168 | 10,203 |
pythondev | help | say from port 1 I want to reroute to port 2 | 2019-02-24T11:34:18.417500 | Elisha | pythondev_help_Elisha_2019-02-24T11:34:18.417500 | 1,551,008,058.4175 | 10,204 |
pythondev | help | Yep that is what a proxy does | 2019-02-24T11:34:50.417800 | Ashley | pythondev_help_Ashley_2019-02-24T11:34:50.417800 | 1,551,008,090.4178 | 10,205 |
pythondev | help | can you give some idea how to code it? | 2019-02-24T11:35:18.418200 | Elisha | pythondev_help_Elisha_2019-02-24T11:35:18.418200 | 1,551,008,118.4182 | 10,206 |
pythondev | help | some link or some reference will be good? | 2019-02-24T11:36:00.419500 | Elisha | pythondev_help_Elisha_2019-02-24T11:36:00.419500 | 1,551,008,160.4195 | 10,207 |
pythondev | help | You can probably find some good tutorials by just doing a Google search for python proxy | 2019-02-24T11:36:02.419600 | Ashley | pythondev_help_Ashley_2019-02-24T11:36:02.419600 | 1,551,008,162.4196 | 10,208 |
pythondev | help | ok | 2019-02-24T11:36:12.419900 | Elisha | pythondev_help_Elisha_2019-02-24T11:36:12.419900 | 1,551,008,172.4199 | 10,209 |
pythondev | help | There's a ton of guides out there already | 2019-02-24T11:36:21.420300 | Ashley | pythondev_help_Ashley_2019-02-24T11:36:21.420300 | 1,551,008,181.4203 | 10,210 |
pythondev | help | ok | 2019-02-24T11:36:36.420500 | Elisha | pythondev_help_Elisha_2019-02-24T11:36:36.420500 | 1,551,008,196.4205 | 10,211 |
pythondev | help | And now you know the proper terms to look up, which should make finding relevant sources much easier | 2019-02-24T11:37:40.421900 | Hiroko | pythondev_help_Hiroko_2019-02-24T11:37:40.421900 | 1,551,008,260.4219 | 10,212 |
pythondev | help | sure thanks a lot | 2019-02-24T11:38:35.422400 | Elisha | pythondev_help_Elisha_2019-02-24T11:38:35.422400 | 1,551,008,315.4224 | 10,213 |
pythondev | help | I think there is a headless chrome which should be faster as it's just the rendering engine | 2019-02-24T12:36:42.422500 | Edythe | pythondev_help_Edythe_2019-02-24T12:36:42.422500 | 1,551,011,802.4225 | 10,214 |
pythondev | help | Cool. Ty. There is also <http://Scrapinghub.com|Scrapinghub.com> | 2019-02-24T12:50:21.423600 | China | pythondev_help_China_2019-02-24T12:50:21.423600 | 1,551,012,621.4236 | 10,215 |
pythondev | help | Is it guaranteed that python numpy random number generator gives same sequence every time with same seed. I using that sequence to encode data, it would be impossible to decode back in future if numpy generate different sequence with seed | 2019-02-24T12:55:48.429300 | China | pythondev_help_China_2019-02-24T12:55:48.429300 | 1,551,012,948.4293 | 10,216 |
pythondev | help | The `RandomState` docs have this guarantee: "_Compatibility Guarantee_ A fixed seed and a fixed series of calls to ‘RandomState’ methods using the same parameters will always produce the same results up to roundoff error except when the values were incorrect. Incorrect values will be fixed and the NumPy version in which the fix was made will be noted in the relevant docstring. Extension of existing parameter ranges and the addition of new parameters is allowed as long the previous behavior remains unchanged." | 2019-02-24T13:34:09.430000 | Sasha | pythondev_help_Sasha_2019-02-24T13:34:09.430000 | 1,551,015,249.43 | 10,217 |
pythondev | help | That said, if you're using this for encryption, I'd recommend an actual cryptography algorithm, since the pseudo-random sequence might not be very secure against decoding attempts. | 2019-02-24T13:35:30.431200 | Sasha | pythondev_help_Sasha_2019-02-24T13:35:30.431200 | 1,551,015,330.4312 | 10,218 |
pythondev | help | The seed is only 32-bit, too, so that's very vulnerable to brute force. | 2019-02-24T13:36:54.431800 | Sasha | pythondev_help_Sasha_2019-02-24T13:36:54.431800 | 1,551,015,414.4318 | 10,219 |
pythondev | help | hi guys, somehow i have the feeling that i am totally overthinking a solution for a problem. i'm doing some exercises and there is one about 2 arrays. the first array is representing the size of a fish and the second array represents their direction (it can be just 0 or 1). if the fishes are swimming the same direction, they will never meet and therefore never eat each other. the bigger fish is always eating the smaller fish and so on and so on.
for example, given those arrays:
``` A[0] = 4 B[0] = 0
A[1] = 3 B[1] = 1
A[2] = 2 B[2] = 0
A[3] = 1 B[3] = 0
A[4] = 5 B[4] = 0```
you have to find out how many fish will survive. there is just one fish swimming in the opposite direction, which is fish A[1]. this fish will eat fish A[2] and A[3] but will be eaten by fish A[4].
therefore only 2 fish (A[0] and A[4]) will survive as they are swimming in the same direction and will never collide.
i was thinking of a for loop in the very beginning..but if i do that and for example fish A[1] would eat the A[4]..i would never hit the fish A[0] again. i started thinking of a while loop and so on... does someone has an idea? i hope its more or less clear - otherwise please feel free to ask :man-shrugging::pray: thanks! | 2019-02-24T13:46:38.438500 | Reggie | pythondev_help_Reggie_2019-02-24T13:46:38.438500 | 1,551,015,998.4385 | 10,220 |
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