workspace
stringclasses
1 value
channel
stringclasses
1 value
sentences
stringlengths
1
3.93k
ts
stringlengths
26
26
user
stringlengths
2
11
sentence_id
stringlengths
44
53
timestamp
float64
1.5B
1.56B
__index_level_0__
int64
0
106k
pythondev
help
Hi, I’ve been having some issues with class attributes and properties (python 3). I know how getters and setters are generally used and that it’s the pythonic way to use the `@property` to achieve define getters and setters when they are required. Any feedback is appreciated. Sorry for the longish quesiton. Now my q...
2019-03-04T14:26:28.466100
Dominga
pythondev_help_Dominga_2019-03-04T14:26:28.466100
1,551,709,588.4661
11,921
pythondev
help
Why do you want to use a setter but hide it?
2019-03-04T14:28:30.467200
Lillia
pythondev_help_Lillia_2019-03-04T14:28:30.467200
1,551,709,710.4672
11,922
pythondev
help
so, first of all the `_` is convention, nothing _stops_ client code from using it. That aside, you can use the property assignment instead of the decorator
2019-03-04T14:28:40.467300
Clemmie
pythondev_help_Clemmie_2019-03-04T14:28:40.467300
1,551,709,720.4673
11,923
pythondev
help
This is what you would do - it is not an accepted answer, but it is correct <https://stackoverflow.com/questions/42137210/python-property-with-public-getter-and-private-setter>
2019-03-04T14:29:07.468000
Clemmie
pythondev_help_Clemmie_2019-03-04T14:29:07.468000
1,551,709,747.468
11,924
pythondev
help
thank you <@Clemmie>, I’ll have a look at that link <@Lillia> I thought that it could be used to validate the data for the attribute when set internally by my class. Would such a validation be unnecessary if the attribute is set internally by the class?
2019-03-04T14:35:17.470400
Dominga
pythondev_help_Dominga_2019-03-04T14:35:17.470400
1,551,710,117.4704
11,925
pythondev
help
Can't you do the validation in the method that's setting the new value?
2019-03-04T14:35:36.470700
Lillia
pythondev_help_Lillia_2019-03-04T14:35:36.470700
1,551,710,136.4707
11,926
pythondev
help
Getters/setters make the life of the caller easier, that's really it.
2019-03-04T14:35:54.471100
Lillia
pythondev_help_Lillia_2019-03-04T14:35:54.471100
1,551,710,154.4711
11,927
pythondev
help
Makes for less typing.
2019-03-04T14:36:07.471500
Lillia
pythondev_help_Lillia_2019-03-04T14:36:07.471500
1,551,710,167.4715
11,928
pythondev
help
I wouldn't add unnecessary boilerplate if you're already setting the value yourself.
2019-03-04T14:36:26.471800
Lillia
pythondev_help_Lillia_2019-03-04T14:36:26.471800
1,551,710,186.4718
11,929
pythondev
help
(I'll add a caveat, a setter _may_ be good if you use this validation in many places)
2019-03-04T14:36:52.472500
Lillia
pythondev_help_Lillia_2019-03-04T14:36:52.472500
1,551,710,212.4725
11,930
pythondev
help
Actually I take that back; using a setter for validation is a bit weird.
2019-03-04T14:40:01.476000
Lillia
pythondev_help_Lillia_2019-03-04T14:40:01.476000
1,551,710,401.476
11,931
pythondev
help
Validation on attribute change is a hard one. The client can still access the underlying attribute without calling the setter. It is kind of like front-end back-end validation. Good to do on the frontend for speed/clarity, but if you don’t check on the backend also you will compromised
2019-03-04T14:40:32.477100
Clemmie
pythondev_help_Clemmie_2019-03-04T14:40:32.477100
1,551,710,432.4771
11,932
pythondev
help
So, by all means validate on change, but you should also when the value is _used_
2019-03-04T14:40:53.477900
Clemmie
pythondev_help_Clemmie_2019-03-04T14:40:53.477900
1,551,710,453.4779
11,933
pythondev
help
Hm, I thought it is more readable and contained in that class. I have an instance of an Account class, modeling a bank account. For that bank account, I have a balance attribute and a corresponding setter, that checks if it ever drops below 0. If it does, it raises a ValueError. I also have an Atm class which uses th...
2019-03-04T14:41:01.478200
Dominga
pythondev_help_Dominga_2019-03-04T14:41:01.478200
1,551,710,461.4782
11,934
pythondev
help
I would have `withdraw()` do the check. Adding a setter simply for validation is unneeded boilerplate. It doesn't make the life of the caller any easier.
2019-03-04T14:41:49.479000
Lillia
pythondev_help_Lillia_2019-03-04T14:41:49.479000
1,551,710,509.479
11,935
pythondev
help
So what is a setter for if not for validation of the to be set value?
2019-03-04T14:43:25.481600
Dominga
pythondev_help_Dominga_2019-03-04T14:43:25.481600
1,551,710,605.4816
11,936
pythondev
help
<https://pythondev.slack.com/archives/C07EFMZ1N/p1551728154471100>
2019-03-04T14:43:40.482000
Lillia
pythondev_help_Lillia_2019-03-04T14:43:40.482000
1,551,710,620.482
11,937
pythondev
help
For example, following your account example, you may want to do validation when a caller sets the actual account balance.
2019-03-04T14:44:03.482900
Lillia
pythondev_help_Lillia_2019-03-04T14:44:03.482900
1,551,710,643.4829
11,938
pythondev
help
Rather than having `account.setBalance(x)`, you can define a setter and simply do `account.balance = x`
2019-03-04T14:44:23.483700
Lillia
pythondev_help_Lillia_2019-03-04T14:44:23.483700
1,551,710,663.4837
11,939
pythondev
help
Hi guys, I know this is a long shot, but I have 30mn left to deliver a project and no time to do manual edits, or write the script fast enough due to my basic knowledge. I have 100+ json files, each file is stored in individual directory into my working directory. I need to update one value for one object in each file...
2019-03-04T14:44:27.484000
Ludie
pythondev_help_Ludie_2019-03-04T14:44:27.484000
1,551,710,667.484
11,940
pythondev
help
Your setter can do the same validation that `setBalance` would have done, but it makes the syntax cleaner for the caller. Does that make sense?
2019-03-04T14:44:53.484500
Lillia
pythondev_help_Lillia_2019-03-04T14:44:53.484500
1,551,710,693.4845
11,941
pythondev
help
You aren't expecting the caller to directly set the balance, correct?
2019-03-04T14:45:16.485100
Lillia
pythondev_help_Lillia_2019-03-04T14:45:16.485100
1,551,710,716.4851
11,942
pythondev
help
linux or windows?
2019-03-04T14:45:49.485300
Clemmie
pythondev_help_Clemmie_2019-03-04T14:45:49.485300
1,551,710,749.4853
11,943
pythondev
help
macOS :smile:
2019-03-04T14:45:55.485700
Ludie
pythondev_help_Ludie_2019-03-04T14:45:55.485700
1,551,710,755.4857
11,944
pythondev
help
ok, great, you have a terminal
2019-03-04T14:46:04.486000
Clemmie
pythondev_help_Clemmie_2019-03-04T14:46:04.486000
1,551,710,764.486
11,945
pythondev
help
yes, i know python basics and for loops
2019-03-04T14:46:29.486700
Ludie
pythondev_help_Ludie_2019-03-04T14:46:29.486700
1,551,710,789.4867
11,946
pythondev
help
but not enough about json specifically
2019-03-04T14:46:33.487000
Ludie
pythondev_help_Ludie_2019-03-04T14:46:33.487000
1,551,710,793.487
11,947
pythondev
help
what is the value you need to change, and is it part of a string that is unique in each file?
2019-03-04T14:46:33.487100
Clemmie
pythondev_help_Clemmie_2019-03-04T14:46:33.487100
1,551,710,793.4871
11,948
pythondev
help
That makes sense. That is correct. The caller would invoke the `withdraw` method of the account object, which would set the balance internally.
2019-03-04T14:46:34.487400
Dominga
pythondev_help_Dominga_2019-03-04T14:46:34.487400
1,551,710,794.4874
11,949
pythondev
help
Right; you already have methods that the caller will use. Those methods can do the validation just fine.
2019-03-04T14:46:54.488100
Lillia
pythondev_help_Lillia_2019-03-04T14:46:54.488100
1,551,710,814.4881
11,950
pythondev
help
Ahhh, so if my Atm class would set the balance directly, then it would make sense to create a setter?
2019-03-04T14:46:58.488400
Dominga
pythondev_help_Dominga_2019-03-04T14:46:58.488400
1,551,710,818.4884
11,951
pythondev
help
Correct!
2019-03-04T14:47:02.488600
Lillia
pythondev_help_Lillia_2019-03-04T14:47:02.488600
1,551,710,822.4886
11,952
pythondev
help
Sample file: ```{ "version": "1.0", "identifier": "2854-1269-8-1", "title": "Welcome To The World Of More", "language": "en" }```
2019-03-04T14:47:05.488800
Ludie
pythondev_help_Ludie_2019-03-04T14:47:05.488800
1,551,710,825.4888
11,953
pythondev
help
And do you need to maintain the directory strucutre
2019-03-04T14:47:10.489100
Clemmie
pythondev_help_Clemmie_2019-03-04T14:47:10.489100
1,551,710,830.4891
11,954
pythondev
help
Thank you very much.
2019-03-04T14:47:13.489400
Dominga
pythondev_help_Dominga_2019-03-04T14:47:13.489400
1,551,710,833.4894
11,955
pythondev
help
i need to change the language value to `fr`
2019-03-04T14:47:14.489500
Ludie
pythondev_help_Ludie_2019-03-04T14:47:14.489500
1,551,710,834.4895
11,956
pythondev
help
Yes, i need to keep that structure
2019-03-04T14:47:26.489800
Ludie
pythondev_help_Ludie_2019-03-04T14:47:26.489800
1,551,710,846.4898
11,957
pythondev
help
ok, give me a couple of minutes
2019-03-04T14:47:34.490000
Clemmie
pythondev_help_Clemmie_2019-03-04T14:47:34.490000
1,551,710,854.49
11,958
pythondev
help
Thanks!!
2019-03-04T14:47:44.490200
Ludie
pythondev_help_Ludie_2019-03-04T14:47:44.490200
1,551,710,864.4902
11,959
pythondev
help
saving my ass
2019-03-04T14:47:46.490500
Ludie
pythondev_help_Ludie_2019-03-04T14:47:46.490500
1,551,710,866.4905
11,960
pythondev
help
<@Lillia> and <@Clemmie> thanks for your time and the explanations. I appreciate it.
2019-03-04T14:48:20.491100
Dominga
pythondev_help_Dominga_2019-03-04T14:48:20.491100
1,551,710,900.4911
11,961
pythondev
help
Welcome!
2019-03-04T14:48:34.491300
Lillia
pythondev_help_Lillia_2019-03-04T14:48:34.491300
1,551,710,914.4913
11,962
pythondev
help
Good questions
2019-03-04T14:48:46.491500
Lillia
pythondev_help_Lillia_2019-03-04T14:48:46.491500
1,551,710,926.4915
11,963
pythondev
help
Heh heh, this is like a coding challenge competition.
2019-03-04T14:49:45.491700
Sasha
pythondev_help_Sasha_2019-03-04T14:49:45.491700
1,551,710,985.4917
11,964
pythondev
help
is there a single file in each directory, and nothing else?
2019-03-04T14:50:53.491900
Clemmie
pythondev_help_Clemmie_2019-03-04T14:50:53.491900
1,551,711,053.4919
11,965
pythondev
help
yes
2019-03-04T14:50:57.492100
Ludie
pythondev_help_Ludie_2019-03-04T14:50:57.492100
1,551,711,057.4921
11,966
pythondev
help
ok, first, make a whole copy of your directory structure in case we screw up
2019-03-04T14:51:18.492300
Clemmie
pythondev_help_Clemmie_2019-03-04T14:51:18.492300
1,551,711,078.4923
11,967
pythondev
help
`/dir/file1.json` `/dir/file2.json` `/dir/file3.json`
2019-03-04T14:51:23.492500
Ludie
pythondev_help_Ludie_2019-03-04T14:51:23.492500
1,551,711,083.4925
11,968
pythondev
help
ok
2019-03-04T14:51:30.492700
Ludie
pythondev_help_Ludie_2019-03-04T14:51:30.492700
1,551,711,090.4927
11,969
pythondev
help
wait
2019-03-04T14:52:24.493000
Ludie
pythondev_help_Ludie_2019-03-04T14:52:24.493000
1,551,711,144.493
11,970
pythondev
help
the directory structure above is innacurate, one second
2019-03-04T14:52:32.493200
Ludie
pythondev_help_Ludie_2019-03-04T14:52:32.493200
1,551,711,152.4932
11,971
pythondev
help
then in a terminal that is at the root of the directory structure you will want to run `sed -i 's/"language": "en"/"language": "fr"/g" */*.json`
2019-03-04T14:52:32.493300
Clemmie
pythondev_help_Clemmie_2019-03-04T14:52:32.493300
1,551,711,152.4933
11,972
pythondev
help
`sed` !
2019-03-04T14:52:39.493600
Lillia
pythondev_help_Lillia_2019-03-04T14:52:39.493600
1,551,711,159.4936
11,973
pythondev
help
`/dir/a1/file.json` `/dir/a2/file.json` `/dir/a3/file.json`
2019-03-04T14:52:52.493900
Ludie
pythondev_help_Ludie_2019-03-04T14:52:52.493900
1,551,711,172.4939
11,974
pythondev
help
that says “use the stream editor in place to replace string 1 with sdtring 2, globally in each file
2019-03-04T14:53:07.494200
Clemmie
pythondev_help_Clemmie_2019-03-04T14:53:07.494200
1,551,711,187.4942
11,975
pythondev
help
ok, so first i cd to my test directory
2019-03-04T14:53:34.494400
Ludie
pythondev_help_Ludie_2019-03-04T14:53:34.494400
1,551,711,214.4944
11,976
pythondev
help
yup
2019-03-04T14:53:43.494600
Clemmie
pythondev_help_Clemmie_2019-03-04T14:53:43.494600
1,551,711,223.4946
11,977
pythondev
help
Watch out for the quote after `/g`.
2019-03-04T14:53:59.494800
Sasha
pythondev_help_Sasha_2019-03-04T14:53:59.494800
1,551,711,239.4948
11,978
pythondev
help
yup, my bad - should be a single `'`
2019-03-04T14:54:19.495000
Clemmie
pythondev_help_Clemmie_2019-03-04T14:54:19.495000
1,551,711,259.495
11,979
pythondev
help
its not meant to be there?
2019-03-04T14:54:20.495200
Ludie
pythondev_help_Ludie_2019-03-04T14:54:20.495200
1,551,711,260.4952
11,980
pythondev
help
oki
2019-03-04T14:54:25.495400
Ludie
pythondev_help_Ludie_2019-03-04T14:54:25.495400
1,551,711,265.4954
11,981
pythondev
help
`sed -i 's/"language": "en"/"language": "fr"/g' */*.json`
2019-03-04T14:54:36.495600
Clemmie
pythondev_help_Clemmie_2019-03-04T14:54:36.495600
1,551,711,276.4956
11,982
pythondev
help
`sed -i 's/"language": "en"/"language": "fr"/g' */*.json`
2019-03-04T14:54:38.495800
Ludie
pythondev_help_Ludie_2019-03-04T14:54:38.495800
1,551,711,278.4958
11,983
pythondev
help
this is why we copied first
2019-03-04T14:54:45.496000
Clemmie
pythondev_help_Clemmie_2019-03-04T14:54:45.496000
1,551,711,285.496
11,984
pythondev
help
`sed: 1: "1/article.json": invalid command code /`
2019-03-04T14:55:05.496200
Ludie
pythondev_help_Ludie_2019-03-04T14:55:05.496200
1,551,711,305.4962
11,985
pythondev
help
hopefully yes. we may need to do some string escaping to make it work for sure
2019-03-04T14:55:07.496400
Clemmie
pythondev_help_Clemmie_2019-03-04T14:55:07.496400
1,551,711,307.4964
11,986
pythondev
help
I think this is connected to my directory structure
2019-03-04T14:55:13.496600
Ludie
pythondev_help_Ludie_2019-03-04T14:55:13.496600
1,551,711,313.4966
11,987
pythondev
help
the error
2019-03-04T14:55:16.496800
Ludie
pythondev_help_Ludie_2019-03-04T14:55:16.496800
1,551,711,316.4968
11,988
pythondev
help
nope on os x I forgot -e
2019-03-04T14:55:28.497000
Clemmie
pythondev_help_Clemmie_2019-03-04T14:55:28.497000
1,551,711,328.497
11,989
pythondev
help
`sed -i -e 's/"language": "en"/"language": "fr"/g' */*.json`
2019-03-04T14:55:46.497200
Clemmie
pythondev_help_Clemmie_2019-03-04T14:55:46.497200
1,551,711,346.4972
11,990
pythondev
help
ok, it ran
2019-03-04T14:55:57.497400
Ludie
pythondev_help_Ludie_2019-03-04T14:55:57.497400
1,551,711,357.4974
11,991
pythondev
help
let me check the output :smile:
2019-03-04T14:56:00.497600
Ludie
pythondev_help_Ludie_2019-03-04T14:56:00.497600
1,551,711,360.4976
11,992
pythondev
help
or maybe not, one second
2019-03-04T14:56:07.497800
Clemmie
pythondev_help_Clemmie_2019-03-04T14:56:07.497800
1,551,711,367.4978
11,993
pythondev
help
it worked!!
2019-03-04T14:56:25.498000
Ludie
pythondev_help_Ludie_2019-03-04T14:56:25.498000
1,551,711,385.498
11,994
pythondev
help
but
2019-03-04T14:56:27.498200
Ludie
pythondev_help_Ludie_2019-03-04T14:56:27.498200
1,551,711,387.4982
11,995
pythondev
help
it created a duplicate file too, with `file.json-e`
2019-03-04T14:56:48.498400
Ludie
pythondev_help_Ludie_2019-03-04T14:56:48.498400
1,551,711,408.4984
11,996
pythondev
help
I thought it might
2019-03-04T14:57:07.498600
Clemmie
pythondev_help_Clemmie_2019-03-04T14:57:07.498600
1,551,711,427.4986
11,997
pythondev
help
does the txt look correct in those?
2019-03-04T14:57:14.498800
Clemmie
pythondev_help_Clemmie_2019-03-04T14:57:14.498800
1,551,711,434.4988
11,998
pythondev
help
no
2019-03-04T14:57:34.499000
Ludie
pythondev_help_Ludie_2019-03-04T14:57:34.499000
1,551,711,454.499
11,999
pythondev
help
the -e files seem to have the old data
2019-03-04T14:57:40.499200
Ludie
pythondev_help_Ludie_2019-03-04T14:57:40.499200
1,551,711,460.4992
12,000
pythondev
help
and the files with the proper name, have the proper data
2019-03-04T14:57:49.499400
Ludie
pythondev_help_Ludie_2019-03-04T14:57:49.499400
1,551,711,469.4994
12,001
pythondev
help
is there a way to not generate the second file?
2019-03-04T14:58:07.499600
Ludie
pythondev_help_Ludie_2019-03-04T14:58:07.499600
1,551,711,487.4996
12,002
pythondev
help
ok, different try
2019-03-04T14:58:21.499800
Clemmie
pythondev_help_Clemmie_2019-03-04T14:58:21.499800
1,551,711,501.4998
12,003
pythondev
help
I think yes, try this
2019-03-04T14:58:34.500000
Clemmie
pythondev_help_Clemmie_2019-03-04T14:58:34.500000
1,551,711,514.5
12,004
pythondev
help
`sed -i'' 's/"language": "en"/"language": "fr"/g' */*.json`
2019-03-04T14:59:08.500200
Clemmie
pythondev_help_Clemmie_2019-03-04T14:59:08.500200
1,551,711,548.5002
12,005
pythondev
help
ok
2019-03-04T14:59:19.500400
Ludie
pythondev_help_Ludie_2019-03-04T14:59:19.500400
1,551,711,559.5004
12,006
pythondev
help
Error: `sed: 1: "1/article.json": invalid command code /`
2019-03-04T14:59:31.500600
Ludie
pythondev_help_Ludie_2019-03-04T14:59:31.500600
1,551,711,571.5006
12,007
pythondev
help
we’ll get it
2019-03-04T14:59:43.500800
Clemmie
pythondev_help_Clemmie_2019-03-04T14:59:43.500800
1,551,711,583.5008
12,008
pythondev
help
how much time do you have?
2019-03-04T14:59:48.501000
Clemmie
pythondev_help_Clemmie_2019-03-04T14:59:48.501000
1,551,711,588.501
12,009
pythondev
help
15mn before i get in trouble, more or less
2019-03-04T14:59:56.501200
Ludie
pythondev_help_Ludie_2019-03-04T14:59:56.501200
1,551,711,596.5012
12,010
pythondev
help
May be easier to just mass-delete the `-e` files?
2019-03-04T14:59:58.501400
Sasha
pythondev_help_Sasha_2019-03-04T14:59:58.501400
1,551,711,598.5014
12,011
pythondev
help
ok
2019-03-04T14:59:59.501600
Clemmie
pythondev_help_Clemmie_2019-03-04T14:59:59.501600
1,551,711,599.5016
12,012
pythondev
help
going to the bathroom for 1mn
2019-03-04T15:01:52.501900
Ludie
pythondev_help_Ludie_2019-03-04T15:01:52.501900
1,551,711,712.5019
12,013
pythondev
help
<@Lillia> <@Jettie> that worked thanks a bunch. just didn't expect the format to be in bytes so I will try with mode='rt'
2019-03-04T15:02:46.502800
Alvina
pythondev_help_Alvina_2019-03-04T15:02:46.502800
1,551,711,766.5028
12,014
pythondev
help
Am back!
2019-03-04T15:04:33.503000
Ludie
pythondev_help_Ludie_2019-03-04T15:04:33.503000
1,551,711,873.503
12,015
pythondev
help
working on it
2019-03-04T15:06:35.503200
Clemmie
pythondev_help_Clemmie_2019-03-04T15:06:35.503200
1,551,711,995.5032
12,016
pythondev
help
`find ~/tmp/a -type f -exec sed -i '' 's/"language": "en"/"language": "fr"/g' {} \;` make sure to replace `/tmp/a` with the path to your current directory
2019-03-04T15:07:55.503400
Clemmie
pythondev_help_Clemmie_2019-03-04T15:07:55.503400
1,551,712,075.5034
12,017
pythondev
help
yay, all set.
2019-03-04T15:08:31.503800
Alvina
pythondev_help_Alvina_2019-03-04T15:08:31.503800
1,551,712,111.5038
12,018
pythondev
help
wait
2019-03-04T15:09:34.504000
Ludie
pythondev_help_Ludie_2019-03-04T15:09:34.504000
1,551,712,174.504
12,019
pythondev
help
your command worked , i think you missed a space
2019-03-04T15:09:43.504200
Ludie
pythondev_help_Ludie_2019-03-04T15:09:43.504200
1,551,712,183.5042
12,020