yes | dangerous yes command in various languages | Command Line Interface library
kandi X-RAY | yes Summary
kandi X-RAY | yes Summary
The yes command outputs the same string, STRING, in a constant stream. If STRING is not specified, the word it repeats is y. :repeat:. yes dates back to a time before Unix commands included the "force" (-f) option, which for many commands is the same as answering "yes" to all prompts. yes can be used to do something very similar: if the output of yes is piped to a command, it will effectively answer "yes" to any confirmation prompts.
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QUESTION
I built an app using Django 3.2.3., but when I try to settup my javascript code for the HTML, it doesn't work. I have read this post Django Static Files Development and follow the instructions, but it doesn't resolve my issue.
Also I couldn't find TEMPLATE_CONTEXT_PROCESSORS
, according to this post no TEMPLATE_CONTEXT_PROCESSORS in django, from 1.7 Django and later, TEMPLATE_CONTEXT_PROCESSORS
is the same as TEMPLATE
to config django.core.context_processors.static
but when I paste that code, turns in error saying django.core.context_processors.static
doesn't exist.
I don't have idea why my javascript' script isn't working.
The configurations are the followings
Settings.py
...ANSWER
Answered 2021-Jun-15 at 18:56Run ‘python manage.py collectstatic’ and try again.
The way you handle static wrong, remove the static dirs in your INSTALLED_APPS out of STATIC_DIRS and set a STATIC_ROOT then collectstatic again.
Add the following as django documentation to your urls.py
QUESTION
Giving a bit of context. I'm using c++17. I'm using pointer T* data
because this will interop with cuda code. I'm trying write a parallel version (on CPU) of a histogram creator. The sequential version:
ANSWER
Answered 2021-Jun-16 at 00:46The issue you are having has nothing to do with templates. You cannot invoke std::async()
on a member function without binding it to an instance. Wrapping the call in a lambda does the trick.
Here's an example:
QUESTION
I have a dataset with many columns and I'd like to locate the columns that have fewer than n unique responses and change just those columns into factors.
Here is one way I was able to do that:
...ANSWER
Answered 2021-Jun-15 at 20:29Here is a way using tidyverse
.
We can make use of where
within across
to select the columns with logical short-circuit expression where we check
- the columns are
numeric
- (is.numeric
) - if the 1 is TRUE, check whether number of distinct elements less than the user defined n
- if 2 is TRUE, then check
all
theunique
elements in the column are 0 and 1 - loop over those selected column and convert to
factor
class
QUESTION
After looking at several posts here, every post explains how to replace yes/no in a column with 1/0, but the datatype of those numbers remain 'object' and is not float or int (even after I use astype(int)), so I can't do further operation with them. My code is below. Anyone knows how to convert datatype now from object to float or int?
...ANSWER
Answered 2021-Jun-15 at 21:11Try casting to str
before replacing:
QUESTION
I have bitcoin historical data. I split the "DATE" Colum as "year month days and hour" because I wanted to sort data based on hours["AS it is hourly base data"]. the data goes up to 2021-12 ie Decmber["the dates goes from 1 to 30 every month"]. I want to sort this data further as:- "2019-Jan, 2020-Jan 20201-Jan" then "2019-Feb,2020-Feb, 2021-Feb" and soon on
Year Month DAy Hour open high low close 2019 1 1 0 3700.05 3725.58 3698.83 3715.09 2019 2 1 0 3700.05 3725.58 3698.83 3715.09 2019 3 1 0 3700.05 3725.58 3698.83 3715.09 2019 4 1 0 3700.05 3725.58 3698.83 3715.09 2019 5 1 0 3700.05 3725.58 3698.83 3715.09can this be done by saying I have split the "DATE" column? if YES please any suggestion on how this can be achieved
The original "DATE" colum was as follows :- 2019-01-01T00:00:00Z
...ANSWER
Answered 2021-Jun-15 at 18:58You can first sort with respect to Month
and then Year
:
QUESTION
How to get the return value? Attach my code. My intention: Want to check the QListWidget and if it's empty, a message Box popup will raise and ask the option from the user. Problem: At the stage of beginning itself, a Message box popup will display, (I don't want it at the beginning stage), If the QListwidget is empty then the MessageBox popup will display as desired, and if we select "Yes" or " No" Button, Nothing will return/print in the first file. How to resolve?
Main
...ANSWER
Answered 2021-Jun-15 at 16:49In first it is not necessary to make the verification be done in a new class, it is also logical that you invoke func_create_newitem since as you point out that method must be invoked when the item was not found.
QUESTION
I have a small dataset based on a survey(about 80 obsv) & on which i want to perform a logistic regression using SAS.
My survey contains some variables (named X1,X2,X3) that i want to reunite as categories of a new created variable named X4.
The problem is that those variables X1-X3 already have categories (YES/NO/WITHOUT OPINION)
How can i reunite them as categories of X4 but with considering the values that they have ?
to help you understand my question :
Y(=1/0) = X1 X2 X3
X1-X3 each have 3 categories (YES/NO/WITHOUT OPINION)
What i want is :
Proc logistic data = have ; model Y = X4 and others such as age, city... but X4 can take 3 values.
The problem isn't creating X4 based on X1-X3 but how to affect X4 the values that X1-X3 each takes ?
(NB: i say X1-X3 but it's more)
I do this in SAS but even a theorical explanation would be helpful !
Thank you.
...ANSWER
Answered 2021-Jun-15 at 16:41I think that the comments are right for the most part - this probably won't help your regression.
But - to answer how to literally do this; usually what you would do is to use powers of 2 (or 3).
So, for typical "yes/no" where you don't care about the 3rd one, you'd assign things like this:
QUESTION
I'm doing a Group Chat with Firebase and currently I'm using a RecyclerView to display chat messages and I'm having a problem. When you open the app in the fragmented home and you go to chat activity and start chatting (adding elements to recycler view) all goes fine. But, when you go via the NavigationDrawer to another fragment and get back to the chat fragment using again this Navigation Drawer. When you add one element in the chat it appears all in the blank it just displays the last message. Anybody knows why does this happens?
Here I leave the RecyclerView Adapter Code:
...ANSWER
Answered 2021-Jun-15 at 13:55To solve your problem you can just remove the OnResume method because you are initializing the array every time you change between fragments and that is the problem.
QUESTION
I'm working on a Dataframe which contains multiple possible values from three different sources for a single item, which is in the index, such as:
...ANSWER
Answered 2021-Jun-15 at 13:39IIUC, try:
QUESTION
Yet another question about the style and the good practices. The code, that I will show, works and do the functionality. But I'd like to know is it ok as solution or may be it's just too ugly?
As the question is a little bit obscure, I will give some points at the end.
So, the use case.
I have a site with the items. There is a functionality to add the item by user. Now I'd like a functionality to add several items via a csv-file.
How should it works?
- User go to special upload page.
- User choose a csv-file, click upload.
- Then he is redirected to the page that show the content of csv-file (as a table).
- If it's ok for user, he clicks "yes" (button with "confirm_items_upload" value) and the items from file are added to database (if they are ok).
I saw already examples for bulk upload for django, and they seem pretty clear. But I don't find an example with an intermediary "verify-confirm" page. So how I did it :
- in views.py : view for upload csv-file page
ANSWER
Answered 2021-May-28 at 09:27a) Even if obviously it could be better, is this solution is acceptable or not at all ?
I think it has some problems you want to address, but the general idea of using the filesystem and storing just filenames can be acceptable, depending on how many users you need to serve and what guarantees regarding data consistency and concurrent accesses you want to make.
I would consider the uploaded file temporary data that may be lost on system failure. If you want to provide any guarantees of not losing the data, you want to store it in a database instead of on the filesystem.
b) I pass 'uploaded_file' from one view to another using "request.session" is it a good practice? Is there another way to do it without using GET variables?
There are up- and downsides to using request.session.
- attackers can not change the filename and thus retrieve data of other users. This is also the reason why you should not use a GET parameter here: If you used one, attackers could simpy change that parameter and get access to files of other users.
- users can upload a file, go and do other stuff, and later come back to actually import the file, however:
- if users end their session, you lose the filename. Also, users can not upload the file on one device, change to another device, and then go on with the import, since the other device will have a different session.
The last point correlates with the leftover files problem: If you lose your information about which files are still needed, it makes cleaning up harder (although, in theory, you can retrieve which files are still needed from the session store).
If it is a problem that sessions might end or change because users clear their cookies or change devices, you could consider adding the filename to the UserProfile
in the database. This way, it is not bound to sessions.
c) At first my wish was to avoid to save the csv-file. But I could not figure out how to do it? Reading all the file to request.session seems not a good idea for me. Is there some possibility to upload the file into memory in Django?
You want to store state. The go-to ways of storing state are the database or a session store. You could load the whole CSVFile and put it into the database as text. Whether this is acceptable depends on your databases ability to handle large, unstructured data. Traditional databases were not originally built for that, however, most of them can handle small binary files pretty well nowadays. A database could give you advantages like ACID guarantees where concurrent writes to the same file on the file system will likely break the file. See this discussion on the dba stackexchange
Your database likely has documentation on the topic, e.g. there is this page about binary data in postgres.
d) If I have to use the tmp-file. How should I handle the situation if user abandon upload at the middle (for example, he sees the confirmation page, but does not click "yes" and decide to re-write his file). How to remove the tmp-file?
Some ideas:
- Limit the count of uploaded files per user to one by design. Currently, your filename is based on a timestamp. This breaks if two users simultaneously decide to upload a file: They will both get the same timestamp, and the file on disk may be corrupted. If you instead use the user's primary key, this guarantees that you have at most one file per user. If they later upload another file, their old file will be overwritten. If your user count is small enough that you can store one leftover file per user, you don't need additional cleaning. However, if the same user simultaneusly uploads two files, this still breaks.
- Use a unique identifier, like a UUID, and delete the old stored file whenever the user uploads a new file. This requires you to still have the old filename, so session storage can not be used with this. You will still always have the last file of the user in the filesystem.
- Use a unique identifier for the filename and set some arbitrary maximum storage duration. Set up a cronjob or similar that regularly goes through the files and deletes all files that have been stored longer than your specified maximum duration. If a user uploads a file, but does not do the actual import soon enough, their data is deleted, and they would have to do the upload again. Here, your code has to handle the case that the file with the stored filename does not exist anymore (and may even be deleted while you are reading the file).
You probably want to limit your server to one file stored per user so that attackers can not fill your filesystem.
e) Small additional question : what kind of checks there are in Django about uploaded file? For example, how could I check that the file is at least a text-file? Should I do it?
You definitely want to set up some maximum file size for the file, as described e.g. here. You could limit the allowed file extensions, but that would only be a usability thing. Attackers could also give you garbage data with any accepted extension.
Keep in mind: If you only store the csv as text data that you load and parse everytime a certain view is accessed, this can be an easy way for attackers to exhaust your servers, giving them an easy DoS attack.
Overall, it depends on what guarantees you want to make, how many users you have and how trustworthy they are. If users might be malicious, you want to keep all possible kinds of data extraction and resource exhaustion attacks in mind. The filesystem will not scale out (at least not as easily as a database).
I know of a similar setup in a project where only a handful of priviliged users are allowed to upload stuff, and we can tolerate deletion of all temporary files on failure. Users will simply have to reupload their files. This works fine.
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