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pythondev | help | Hi,
I am using the multiprocessing library and found the shared state i have implemented is out of sync.
My question is does using `multiprocessing.Value` to keep a counter and `multiprocessing.Lock` to acquire and release write access, work when applied on another process in another thread? | 2019-05-05T13:22:12.123700 | Pura | pythondev_help_Pura_2019-05-05T13:22:12.123700 | 1,557,062,532.1237 | 22,121 |
pythondev | help | I am new to python and programming in general. I am working on a project for my portfolio and am getting a little stuck. I'd like to first create a map and outline several communities within a metropolitan area. Then, enter demographic data (mostly using ACS data) for each of the communities and write a program that allows a user to select and/or rate important neighborhood characteristics and have it return some kind of visualization that represents which neighborhood would be a best fit (or top 3). Is this something that can be done in Python? I've been experimenting with matplotlib and geopandas, but am constantly learning about new libraries to use (want to try cenpy next). I know there are programs that already do this (ESRI live, work, locate) but I want to recreate this type of program to help myself learn. ANY tips or suggestions would be greatly appreciated!!! I'm working in google colab if that makes a difference. Thank you! | 2019-05-05T15:03:51.130100 | Toshia | pythondev_help_Toshia_2019-05-05T15:03:51.130100 | 1,557,068,631.1301 | 22,122 |
pythondev | help | Hi, is anyone here familiar on how AWS EB (application load balancer) interacts with a Flask instance that has a scheduler `from apscheduler.schedulers.background import BackgroundScheduler` in it? I seem to getting a lot of `sqlalchemy.exc.InvalidRequestError: Can't reconnect until invalid transaction is rolled back`, `RuntimeError: Working outside of application context.` or some jobs do not seem to run even though they I know they are queued `scheduler.print_jobs('default')`. | 2019-05-06T01:28:35.134600 | Philip | pythondev_help_Philip_2019-05-06T01:28:35.134600 | 1,557,106,115.1346 | 22,123 |
pythondev | help | probably you need to use `scoped_session` <https://docs.sqlalchemy.org/en/13/orm/contextual.html>
regarding
> Working outside of application context
<https://stackoverflow.com/questions/31444036/runtimeerror-working-outside-of-application-context>
(is it about url_for for example?) | 2019-05-06T02:36:56.134900 | Susan | pythondev_help_Susan_2019-05-06T02:36:56.134900 | 1,557,110,216.1349 | 22,124 |
pythondev | help | Hey is it possible to use regex to remove all non-characters, except one symbol like `!`? | 2019-05-06T02:40:37.135700 | Conchita | pythondev_help_Conchita_2019-05-06T02:40:37.135700 | 1,557,110,437.1357 | 22,125 |
pythondev | help | Example | 2019-05-06T02:40:51.135900 | Conchita | pythondev_help_Conchita_2019-05-06T02:40:51.135900 | 1,557,110,451.1359 | 22,126 |
pythondev | help | ```string = 'this$is@a]dream!'
result = re.sub(r"\W", " ", string)
print(result)
>>> this is a dream``` | 2019-05-06T02:42:17.137300 | Conchita | pythondev_help_Conchita_2019-05-06T02:42:17.137300 | 1,557,110,537.1373 | 22,127 |
pythondev | help | How can I use regex to keep the `!`, so my print statement will return `this is a dream!` | 2019-05-06T02:42:59.137900 | Conchita | pythondev_help_Conchita_2019-05-06T02:42:59.137900 | 1,557,110,579.1379 | 22,128 |
pythondev | help | One way to do it is with a negative lookahead assertion, like `r"(?!!)\W"`. The parenthesized expression only matches if the following character is not `!`. | 2019-05-06T02:51:21.140200 | Sasha | pythondev_help_Sasha_2019-05-06T02:51:21.140200 | 1,557,111,081.1402 | 22,129 |
pythondev | help | ```10.65.41.35 - - [2019-05-05 00:00:00.344] "POST //dw-seasdrt.com:9090/solr/pos_shard5_replica6/select HTTP/1.1" 200 258 "-" "Solr[org.apache.solr.client.solrj.impl.HttpSolrClient] 1.0" 7
10.65.40.241 - - [2019-05-05 00:00:00.368] "POST //dfw-afr3.prod.fdt.com:9090/solr/pos_shard5_replica6/select HTTP/1.1" 200 258 "-" "Solr[org.apache.solr.client.solrj.impl.HttpSolrClient] 1.0" 6```
I want to search for `10.65.41.35` and extract `shard5` | 2019-05-06T02:51:22.140300 | Lanelle | pythondev_help_Lanelle_2019-05-06T02:51:22.140300 | 1,557,111,082.1403 | 22,130 |
pythondev | help | how do i do that | 2019-05-06T02:51:23.140500 | Lanelle | pythondev_help_Lanelle_2019-05-06T02:51:23.140500 | 1,557,111,083.1405 | 22,131 |
pythondev | help | what do you mean in terms of extract? | 2019-05-06T02:56:13.142800 | Leida | pythondev_help_Leida_2019-05-06T02:56:13.142800 | 1,557,111,373.1428 | 22,132 |
pythondev | help | There's some wiggle room in how specific you want to get with the matching pattern, but one sample regex would be something like `r"^10\.65\.41\.35 .*?/pos_(shard\d+)_replica\d+/"`. | 2019-05-06T02:56:14.143000 | Sasha | pythondev_help_Sasha_2019-05-06T02:56:14.143000 | 1,557,111,374.143 | 22,133 |
pythondev | help | or if regex is bit unreadable to you you could do a nested search, search the ip then the shard | 2019-05-06T02:57:25.143800 | Leida | pythondev_help_Leida_2019-05-06T02:57:25.143800 | 1,557,111,445.1438 | 22,134 |
pythondev | help | You're the man <@Sasha> :taco: | 2019-05-06T02:57:45.144300 | Conchita | pythondev_help_Conchita_2019-05-06T02:57:45.144300 | 1,557,111,465.1443 | 22,135 |
pythondev | help | regarding
> Working outside of application context
I encounter these within my scheduled jobs. Some of the said jobs would execute an email wherein I use the following for sending emails.```from flask_mail import Mail
mail = Mail(app)```
Do you suppose the function does not have access to `flask_mail` but has access to the `db` instance from `db = SQLAlchemy(app)` in my `__init__.py` file? | 2019-05-06T03:06:33.144700 | Philip | pythondev_help_Philip_2019-05-06T03:06:33.144700 | 1,557,111,993.1447 | 22,136 |
pythondev | help | Are you by chance using `apscheduler` as well on a AWS EB deployment? I'm kind of confused as to how I should go about setting up a Background Scheduler using `apscheduler` | 2019-05-06T03:09:34.144900 | Philip | pythondev_help_Philip_2019-05-06T03:09:34.144900 | 1,557,112,174.1449 | 22,137 |
pythondev | help | Here is the current snippet as to how I setup my scheduler. I don't think this is the right way atm because the scheduler does not start up unless I try to access one of my endpoints. ```@app.before_first_request
def initialize():
__yesterday = (datetime.datetime.utcnow() - datetime.timedelta(1)).strftime('%Y-%m-%d')
scheduler = BackgroundScheduler(
job_defaults={'misfire_grace_time': 15*60},
jobstores={'default': SQLAlchemyJobStore(url='sqlite:///jobs.sqlite')})
scheduler.start(paused=True)
# scheduler.remove_all_jobs('default')
scheduler.wakeup()
scheduler.add_job(
max_instances=1,
func=foo,
trigger='interval',
coalesce=True,
# hours=2,
seconds=30,
timezone='UTC',
start_date=f'{__yesterday} 01:00:00',
id='foo-id',
replace_existing=True)
scheduler.print_jobs('default')
atexit.register(lambda: scheduler.shutdown())``` | 2019-05-06T03:11:13.145100 | Philip | pythondev_help_Philip_2019-05-06T03:11:13.145100 | 1,557,112,273.1451 | 22,138 |
pythondev | help | This does the trick, but still have one minor issue. There is a hanging `'` at the end of my strings | 2019-05-06T03:16:38.145500 | Conchita | pythondev_help_Conchita_2019-05-06T03:16:38.145500 | 1,557,112,598.1455 | 22,139 |
pythondev | help | Is this something I can also remove using the same regex expression you helped me with above> | 2019-05-06T03:16:58.145700 | Conchita | pythondev_help_Conchita_2019-05-06T03:16:58.145700 | 1,557,112,618.1457 | 22,140 |
pythondev | help | > Are you by chance using `apscheduler` as well on a AWS EB deployment
I don't think that AWS ALB can do any difference with any other deployment | 2019-05-06T03:49:45.146000 | Susan | pythondev_help_Susan_2019-05-06T03:49:45.146000 | 1,557,114,585.146 | 22,141 |
pythondev | help | as per initialization see <https://apscheduler.readthedocs.io/en/latest/userguide.html#configuring-the-scheduler> | 2019-05-06T03:52:39.146200 | Susan | pythondev_help_Susan_2019-05-06T03:52:39.146200 | 1,557,114,759.1462 | 22,142 |
pythondev | help | > Can't reconnect until invalid transaction is rolled back
if multiple threads are used, you need to use `scoped_session`, so connection would be per thread | 2019-05-06T03:55:49.146400 | Susan | pythondev_help_Susan_2019-05-06T03:55:49.146400 | 1,557,114,949.1464 | 22,143 |
pythondev | help | > Working outside of application context
can you post more of error message? | 2019-05-06T03:56:16.146600 | Susan | pythondev_help_Susan_2019-05-06T03:56:16.146600 | 1,557,114,976.1466 | 22,144 |
pythondev | help | I see, I thought that by using `from flask_sqlalchemy import SQLAlchemy`, all my sessions are scoped by default. | 2019-05-06T03:57:15.146900 | Philip | pythondev_help_Philip_2019-05-06T03:57:15.146900 | 1,557,115,035.1469 | 22,145 |
pythondev | help | > Working outside of application context
I seem to be getting the `_mysql_exceptions.OperationalError: (2006, 'MySQL server has gone away')` error for this one. Like you said, I should probably start by using `scoped_session`. | 2019-05-06T04:00:51.147100 | Philip | pythondev_help_Philip_2019-05-06T04:00:51.147100 | 1,557,115,251.1471 | 22,146 |
pythondev | help | Thanks for the pointers kind sir <@Susan> :taco: | 2019-05-06T04:01:22.147300 | Philip | pythondev_help_Philip_2019-05-06T04:01:22.147300 | 1,557,115,282.1473 | 22,147 |
pythondev | help | By chance, do you have a sample snippet wherein a scheduler fires up upon starting the flask application? | 2019-05-06T04:03:21.147500 | Philip | pythondev_help_Philip_2019-05-06T04:03:21.147500 | 1,557,115,401.1475 | 22,148 |
pythondev | help | nope, I don't use apscheduler, we use celery for that purpose | 2019-05-06T04:04:05.147800 | Susan | pythondev_help_Susan_2019-05-06T04:04:05.147800 | 1,557,115,445.1478 | 22,149 |
pythondev | help | Thanks, I'll take a look into Celery + Flask then. | 2019-05-06T04:10:57.148000 | Philip | pythondev_help_Philip_2019-05-06T04:10:57.148000 | 1,557,115,857.148 | 22,150 |
pythondev | help | <@Sasha> regex is hard to me.. could you help me with the for loop or something to do the search | 2019-05-06T04:53:58.148800 | Lanelle | pythondev_help_Lanelle_2019-05-06T04:53:58.148800 | 1,557,118,438.1488 | 22,151 |
pythondev | help | Hey guys, I'm relatively new to Python. I guess I know the basics and I can write some code - but just started with design patterns etc.
Currently I'm working on an ETL project in which we take JSON files and send them into an Azure database. Each JSON has its own custom mapping of fields to Azure tables and columns. So I'm working with one big json_mapper.py file which has a bunch of if/elif/else statements to check which mapping has to be used.
As I understand, this would be a good situation for a factory method. I'd like to refactor this to a nice and clean method, but to be honest I don't really know where to start. I've done some reading into factory methods, but the custom mapping per JSON, which is sometimes very custom, is the hardest part for me. I'm not really sure where to put that etc.
Does anyone have any pointers for me? A direction to where I should / could start? | 2019-05-06T05:26:01.152200 | Dawn | pythondev_help_Dawn_2019-05-06T05:26:01.152200 | 1,557,120,361.1522 | 22,152 |
pythondev | help | <@Dawn> can you show a sample from your code? | 2019-05-06T05:26:46.152800 | Chester | pythondev_help_Chester_2019-05-06T05:26:46.152800 | 1,557,120,406.1528 | 22,153 |
pythondev | help | yeah sure. There's a json which has feedback question objects, and in those question objects there are also answer objects. So this is an example where those questions and answers are split out into two mssql tables. Prepare for ugly code | 2019-05-06T05:27:45.153800 | Dawn | pythondev_help_Dawn_2019-05-06T05:27:45.153800 | 1,557,120,465.1538 | 22,154 |
pythondev | help | None | 2019-05-06T05:28:01.153900 | Dawn | pythondev_help_Dawn_2019-05-06T05:28:01.153900 | 1,557,120,481.1539 | 22,155 |
pythondev | help | this is a snippet of the mapper, which gets called by a general 'transfer' script. it gets the mssql_connection and a list of docs as parameters from the parent script | 2019-05-06T05:28:23.154600 | Dawn | pythondev_help_Dawn_2019-05-06T05:28:23.154600 | 1,557,120,503.1546 | 22,156 |
pythondev | help | and well it actually works fine, it's just ugly because there's like 30 custom mappings and it's only becoming more | 2019-05-06T05:30:24.155300 | Dawn | pythondev_help_Dawn_2019-05-06T05:30:24.155300 | 1,557,120,624.1553 | 22,157 |
pythondev | help | What's the easiest way to find a free, unused port available for binding with pytest? | 2019-05-06T05:30:37.155600 | Jonas | pythondev_help_Jonas_2019-05-06T05:30:37.155600 | 1,557,120,637.1556 | 22,158 |
pythondev | help | I remember seeing a free port fixture around somewhere, but I cannot find it for the life of me | 2019-05-06T05:30:49.156000 | Jonas | pythondev_help_Jonas_2019-05-06T05:30:49.156000 | 1,557,120,649.156 | 22,159 |
pythondev | help | (yes, race conditions etc, but it's a lot better than what we have now) | 2019-05-06T05:31:12.156600 | Jonas | pythondev_help_Jonas_2019-05-06T05:31:12.156600 | 1,557,120,672.1566 | 22,160 |
pythondev | help | I hope this helps :slightly_smiling_face: <https://marshmallow.readthedocs.io/en/3.0/> | 2019-05-06T05:33:59.158600 | Philip | pythondev_help_Philip_2019-05-06T05:33:59.158600 | 1,557,120,839.1586 | 22,161 |
pythondev | help | <@Dawn> okay, so you think your code is ugly mostly because it violates the single responsibility principle, a lot :slightly_smiling_face:
I see thee different blocks of code that should be extracted into their own functions:
1) `doc`, `question` and `answers` parsing logic - some fields are optional, some fields need to be converted, etc.
2) mapping between parsed `doc` fields and `target` fields
3) I/O, data insertion into the database | 2019-05-06T05:39:47.162600 | Chester | pythondev_help_Chester_2019-05-06T05:39:47.162600 | 1,557,121,187.1626 | 22,162 |
pythondev | help | Once you extract parsing logic into its own function, you'll be able to implement mapping as a static dictionary | 2019-05-06T05:47:18.165800 | Chester | pythondev_help_Chester_2019-05-06T05:47:18.165800 | 1,557,121,638.1658 | 22,163 |
pythondev | help | e.g.
```
MAPPED_FIELDS = {
'_id': 'ID',
'createdAt': 'CreatedAt',
...
}
mapped = {}
for key, value in parsed_doc.items():
mapped_key = MAPPED_FIELDS[key]
mapped[mapped_key] = value
``` | 2019-05-06T05:48:42.167300 | Chester | pythondev_help_Chester_2019-05-06T05:48:42.167300 | 1,557,121,722.1673 | 22,164 |
pythondev | help | viola, you now have a generic mapper function that only needs a mapping dictionary as input | 2019-05-06T05:49:16.168000 | Chester | pythondev_help_Chester_2019-05-06T05:49:16.168000 | 1,557,121,756.168 | 22,165 |
pythondev | help | Looks nice, thanks | 2019-05-06T05:51:52.168100 | Dawn | pythondev_help_Dawn_2019-05-06T05:51:52.168100 | 1,557,121,912.1681 | 22,166 |
pythondev | help | first, we dont know where the text comes from - im assuming you can get it line by line | 2019-05-06T06:29:52.168400 | Leida | pythondev_help_Leida_2019-05-06T06:29:52.168400 | 1,557,124,192.1684 | 22,167 |
pythondev | help | you dont need to get the shard if the ip is wrong so on each line you can call ```if "10.65.41.35" in line:``` | 2019-05-06T06:31:15.168600 | Leida | pythondev_help_Leida_2019-05-06T06:31:15.168600 | 1,557,124,275.1686 | 22,168 |
pythondev | help | where `line` is the variable that contains the line of text | 2019-05-06T06:31:35.168800 | Leida | pythondev_help_Leida_2019-05-06T06:31:35.168800 | 1,557,124,295.1688 | 22,169 |
pythondev | help | next up you could get the location of the substring using the `find()` function | 2019-05-06T06:33:46.169000 | Leida | pythondev_help_Leida_2019-05-06T06:33:46.169000 | 1,557,124,426.169 | 22,170 |
pythondev | help | something like ```line.find("_shard")``` | 2019-05-06T06:34:13.169200 | Leida | pythondev_help_Leida_2019-05-06T06:34:13.169200 | 1,557,124,453.1692 | 22,171 |
pythondev | help | that would give you the index for the _ character | 2019-05-06T06:35:41.169400 | Leida | pythondev_help_Leida_2019-05-06T06:35:41.169400 | 1,557,124,541.1694 | 22,172 |
pythondev | help | if you add 6 to it you should have the index for the shard number | 2019-05-06T06:36:32.169600 | Leida | pythondev_help_Leida_2019-05-06T06:36:32.169600 | 1,557,124,592.1696 | 22,173 |
pythondev | help | if you know there are less than 10 shards then you could just get the character from that location, if it can be longer then then you should search for the next occurance of _ and subtracting 1 from the index of it to get the index of the last number, then anything between those two is the shard number | 2019-05-06T06:38:04.169800 | Leida | pythondev_help_Leida_2019-05-06T06:38:04.169800 | 1,557,124,684.1698 | 22,174 |
pythondev | help | is the shard number even what you are looking for? | 2019-05-06T06:38:16.170000 | Leida | pythondev_help_Leida_2019-05-06T06:38:16.170000 | 1,557,124,696.17 | 22,175 |
pythondev | help | <@Leida> sure what would be the snippet | 2019-05-06T06:43:42.170200 | Lanelle | pythondev_help_Lanelle_2019-05-06T06:43:42.170200 | 1,557,125,022.1702 | 22,176 |
pythondev | help | ```
if "10.65.41.35" in line:
index = line.find("_shard")
shard_number = line[index+6]``` | 2019-05-06T06:46:01.170400 | Leida | pythondev_help_Leida_2019-05-06T06:46:01.170400 | 1,557,125,161.1704 | 22,177 |
pythondev | help | you can get an error if line is shorter than `index + 6` tho | 2019-05-06T06:47:04.170600 | Leida | pythondev_help_Leida_2019-05-06T06:47:04.170600 | 1,557,125,224.1706 | 22,178 |
pythondev | help | are u going to also have
```f=open('file','r')
line=f.readlines()``` | 2019-05-06T06:50:26.170800 | Lanelle | pythondev_help_Lanelle_2019-05-06T06:50:26.170800 | 1,557,125,426.1708 | 22,179 |
pythondev | help | `with open(“filename”) as file: ` | 2019-05-06T06:52:12.171000 | Leida | pythondev_help_Leida_2019-05-06T06:52:12.171000 | 1,557,125,532.171 | 22,180 |
pythondev | help | ```
with open("filename") as file:
for line in file:
if "10.65.41.35" in line:
index = line.find("_shard")
shard_number = line[index+6]``` | 2019-05-06T06:52:53.171200 | Leida | pythondev_help_Leida_2019-05-06T06:52:53.171200 | 1,557,125,573.1712 | 22,181 |
pythondev | help | you can add checking if `_shard` was found (find returns -1 if not found) and check the length of line before you try to use an index on it and well maybe replace the 6 with `len("_shard")` so that there are no magic numbers | 2019-05-06T06:58:52.171900 | Leida | pythondev_help_Leida_2019-05-06T06:58:52.171900 | 1,557,125,932.1719 | 22,182 |
pythondev | help | I would like some help clarifying if I have a correct data model. My end goal is to have something that allows users to create their own data models for risks. Users should be able to make their own risk types and attach as many different fields as they like. I want to avoid having database tables that are called `automobiles`, `houses` etc. Fields would be stuff like `first name`, `age`, `serial number` etc i.e. anything the user would want to collect about the risk in question. Fields can be of different types e.g. `text`, `date`, `number`, `currency` etc. | 2019-05-06T07:12:47.178900 | Jamey | pythondev_help_Jamey_2019-05-06T07:12:47.178900 | 1,557,126,767.1789 | 22,183 |
pythondev | help | What would you do with that data? | 2019-05-06T07:14:14.180200 | Chester | pythondev_help_Chester_2019-05-06T07:14:14.180200 | 1,557,126,854.1802 | 22,184 |
pythondev | help | My model at present is as follows: A one to many relationship between `RiskType` and `FieldType`, then a one to many relationship between `Field` and `FieldType`. | 2019-05-06T07:15:01.180900 | Jamey | pythondev_help_Jamey_2019-05-06T07:15:01.180900 | 1,557,126,901.1809 | 22,185 |
pythondev | help | <@Chester> the idea is to use this to create an API where users can make their own risks that they'd like to be insured for. | 2019-05-06T07:16:09.181900 | Jamey | pythondev_help_Jamey_2019-05-06T07:16:09.181900 | 1,557,126,969.1819 | 22,186 |
pythondev | help | Okay, I repeat my question :slightly_smiling_face: | 2019-05-06T07:16:52.182200 | Chester | pythondev_help_Chester_2019-05-06T07:16:52.182200 | 1,557,127,012.1822 | 22,187 |
pythondev | help | Thanks, but with this there's still the problem of nested objects. I have a lot of those and they all look different. Sometimes it's even a nested doc in a nested doc in an array in a nested doc... | 2019-05-06T07:17:23.182500 | Dawn | pythondev_help_Dawn_2019-05-06T07:17:23.182500 | 1,557,127,043.1825 | 22,188 |
pythondev | help | I can rephrase: what would this api give me that a sticky notes app doesn't have? | 2019-05-06T07:17:51.183100 | Chester | pythondev_help_Chester_2019-05-06T07:17:51.183100 | 1,557,127,071.1831 | 22,189 |
pythondev | help | Write a separate parser/mapper for each nested doc. | 2019-05-06T07:18:27.183200 | Chester | pythondev_help_Chester_2019-05-06T07:18:27.183200 | 1,557,127,107.1832 | 22,190 |
pythondev | help | It gives me a use case where I write code that demonstrates my abilities to write an API using DRF. :slightly_smiling_face: | 2019-05-06T07:34:41.185200 | Jamey | pythondev_help_Jamey_2019-05-06T07:34:41.185200 | 1,557,128,081.1852 | 22,191 |
pythondev | help | I see | 2019-05-06T07:35:09.185800 | Chester | pythondev_help_Chester_2019-05-06T07:35:09.185800 | 1,557,128,109.1858 | 22,192 |
pythondev | help | Then pretty much anything would work | 2019-05-06T07:35:14.186000 | Chester | pythondev_help_Chester_2019-05-06T07:35:14.186000 | 1,557,128,114.186 | 22,193 |
pythondev | help | Yes, but that anything needs to be something that I can write up in an Entity Relationship Diagram. | 2019-05-06T07:35:57.187200 | Jamey | pythondev_help_Jamey_2019-05-06T07:35:57.187200 | 1,557,128,157.1872 | 22,194 |
pythondev | help | Maybe a JSONB field is easier to work with if your schema isn't strictly defined | 2019-05-06T07:35:58.187300 | Chester | pythondev_help_Chester_2019-05-06T07:35:58.187300 | 1,557,128,158.1873 | 22,195 |
pythondev | help | ER diagram only makes sense for strictly defined schemas | 2019-05-06T07:36:19.187800 | Chester | pythondev_help_Chester_2019-05-06T07:36:19.187800 | 1,557,128,179.1878 | 22,196 |
pythondev | help | I was just asking to make sure I had the relationships laid out correctly. | 2019-05-06T07:36:34.188200 | Jamey | pythondev_help_Jamey_2019-05-06T07:36:34.188200 | 1,557,128,194.1882 | 22,197 |
pythondev | help | The idea is that it should be strictly defined, yes. Or at least that's what is implied by asking for a ER diagram to go along with your classes. | 2019-05-06T07:37:34.189300 | Jamey | pythondev_help_Jamey_2019-05-06T07:37:34.189300 | 1,557,128,254.1893 | 22,198 |
pythondev | help | :thinking_face: | 2019-05-06T07:37:43.189500 | Chester | pythondev_help_Chester_2019-05-06T07:37:43.189500 | 1,557,128,263.1895 | 22,199 |
pythondev | help | How can you strictly define a schema if you allow users to change it as they wish? | 2019-05-06T07:37:58.189900 | Chester | pythondev_help_Chester_2019-05-06T07:37:58.189900 | 1,557,128,278.1899 | 22,200 |
pythondev | help | What you're looking for is <https://en.wikipedia.org/wiki/Entity%E2%80%93attribute%E2%80%93value_model> | 2019-05-06T07:39:12.191000 | Chester | pythondev_help_Chester_2019-05-06T07:39:12.191000 | 1,557,128,352.191 | 22,201 |
pythondev | help | I think the idea (as I understand it) is that you expose field types e.g. `text`, `numbers` etc to a user so that they can make their own field e.g. a `name` field of `text` type. | 2019-05-06T07:40:07.191600 | Jamey | pythondev_help_Jamey_2019-05-06T07:40:07.191600 | 1,557,128,407.1916 | 22,202 |
pythondev | help | Yes. I think it is what I am looking for. Thanks. :taco: <@Chester>. I'll start from there then. | 2019-05-06T07:42:00.192500 | Jamey | pythondev_help_Jamey_2019-05-06T07:42:00.192500 | 1,557,128,520.1925 | 22,203 |
pythondev | help | So Django is pretty damn good for this kind of thing <@Jamey> | 2019-05-06T08:37:40.192900 | Jonas | pythondev_help_Jonas_2019-05-06T08:37:40.192900 | 1,557,131,860.1929 | 22,204 |
pythondev | help | In a previous project we approached this with a `Question` model, which had a question and a response type | 2019-05-06T08:37:59.193400 | Jonas | pythondev_help_Jonas_2019-05-06T08:37:59.193400 | 1,557,131,879.1934 | 22,205 |
pythondev | help | What we did was make the `Question` class store a JSON field of form keyword arguments | 2019-05-06T08:38:23.194000 | Jonas | pythondev_help_Jonas_2019-05-06T08:38:23.194000 | 1,557,131,903.194 | 22,206 |
pythondev | help | Then, from a given `Question` you can construct a form field with the 'right' validations and types | 2019-05-06T08:38:44.194500 | Jonas | pythondev_help_Jonas_2019-05-06T08:38:44.194500 | 1,557,131,924.1945 | 22,207 |
pythondev | help | And, given `n` questions, you have a `Form` you can validate against | 2019-05-06T08:38:58.194900 | Jonas | pythondev_help_Jonas_2019-05-06T08:38:58.194900 | 1,557,131,938.1949 | 22,208 |
pythondev | help | This doesn't really work that well for ForeignKey fields, but for primitive types it worked excellently. We presented several forms that created the `Question` model with the right schema | 2019-05-06T08:39:56.195800 | Jonas | pythondev_help_Jonas_2019-05-06T08:39:56.195800 | 1,557,131,996.1958 | 22,209 |
pythondev | help | i.e a form with `max_length`, `min_value` etc. These are all just `**kwargs` to a `Field` instance. Once validated, we know they work, and can dynamically create a `Question` form at any time with `field_classes[field_type](**question_instance.args)` | 2019-05-06T08:41:06.197400 | Jonas | pythondev_help_Jonas_2019-05-06T08:41:06.197400 | 1,557,132,066.1974 | 22,210 |
pythondev | help | <@Jonas> :taco: for sharing. Will try this out too. | 2019-05-06T09:12:56.197900 | Jamey | pythondev_help_Jamey_2019-05-06T09:12:56.197900 | 1,557,133,976.1979 | 22,211 |
pythondev | help | Hello... I tried to restart the Network Manager on Ubuntu server LTS 18.04 after configuring network settings with netplan using the following command :
`sudo systemctl restart NetworkManager` | 2019-05-06T09:30:13.201200 | Elmira | pythondev_help_Elmira_2019-05-06T09:30:13.201200 | 1,557,135,013.2012 | 22,212 |
pythondev | help | `error: Unit NetworkManager.service not found` | 2019-05-06T09:30:57.202400 | Elmira | pythondev_help_Elmira_2019-05-06T09:30:57.202400 | 1,557,135,057.2024 | 22,213 |
pythondev | help | Any help? | 2019-05-06T09:31:05.202700 | Elmira | pythondev_help_Elmira_2019-05-06T09:31:05.202700 | 1,557,135,065.2027 | 22,214 |
pythondev | help | might be `network-manager` | 2019-05-06T09:31:31.202900 | Holly | pythondev_help_Holly_2019-05-06T09:31:31.202900 | 1,557,135,091.2029 | 22,215 |
pythondev | help | <@Elmira> | 2019-05-06T09:31:37.203100 | Holly | pythondev_help_Holly_2019-05-06T09:31:37.203100 | 1,557,135,097.2031 | 22,216 |
pythondev | help | you can also double check in I believe `/etc/init.d/` with something like `ls /etc/init.d | grep -i network` | 2019-05-06T09:32:17.203800 | Holly | pythondev_help_Holly_2019-05-06T09:32:17.203800 | 1,557,135,137.2038 | 22,217 |
pythondev | help | Okay I will try it | 2019-05-06T09:42:56.204300 | Elmira | pythondev_help_Elmira_2019-05-06T09:42:56.204300 | 1,557,135,776.2043 | 22,218 |
pythondev | help | `systemctl list-units` should show you all of the services, you can check if it exists there | 2019-05-06T09:43:13.204700 | Leida | pythondev_help_Leida_2019-05-06T09:43:13.204700 | 1,557,135,793.2047 | 22,219 |
pythondev | help | Okay | 2019-05-06T09:43:25.204900 | Elmira | pythondev_help_Elmira_2019-05-06T09:43:25.204900 | 1,557,135,805.2049 | 22,220 |
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