Q_CreationDate stringlengths 23 23 | Title stringlengths 11 149 | Question stringlengths 25 6.53k | Answer stringlengths 15 5.1k | Score float64 -1 1.2 | Is_accepted bool 2
classes | N_answers int64 1 17 | Q_Id int64 0 6.76k |
|---|---|---|---|---|---|---|---|
2019-10-18 20:56:03.203 | How to write in discord with discord.py without receiving a message? | I need to write some messages in discord with my bot, but I don't know how to do it. It seems that discord.py can't send messages autonomously.
Does anyone know how to do it? | I solved putting a while loop inside the function on_message.
So I need to send only a message and then my bot can write as many messages as he wants | 0 | false | 1 | 6,357 |
2019-10-20 03:58:47.513 | How can I cancel an active boto3 s3 file_download? | I'm using boto3 to download files from an s3 bucket & I need to support canceling an active file transfer in my client UI - but I can't find how to do it.
There is a progress callback that I can use for transfer status, but I can not cancel the transfer from there.
I did find that boto3's s3transfer.TransferManager obj... | Can you kill the process associated with the file?
kill $(ps -ef | grep 'process-name' | awk '{print $2}') | 0.201295 | false | 1 | 6,358 |
2019-10-20 13:24:41.453 | How do I limit the number of times a character appears in a string in python? | I'm a beginner, its been ~2 months since i started learning python.
I've written a code about a function that takes two strings, and outputs the common characters between those 2 strings. The issue with my code is that it returns all common characters that the two inputs have. For example:
input: common, moron
the out... | You can try this:
''.join(set(s1).intersection(set(s2))) | 0 | false | 1 | 6,359 |
2019-10-20 20:53:03.697 | How to iterate over a dictionary with tuples? | So,I need to iterate over a dictionary in python where the keys are a tuple and the values are integers.
I only need to print out the keys and values.
I tried this:
for key,value in dict:
but didn't work because it assigned the first element of the tuple to the key and value and the second to the value.
So how should I... | Just use
for key in dict
and then access the value with dict[key] | 0.101688 | false | 1 | 6,360 |
2019-10-21 08:36:05.530 | how to use 1D-convolutional neural network for non-image data | I have a dataset that I have loaded as a data frame in Python. It consists of 21392 rows (the data instances, each row is one sample) and 79 columns (the features). The last column i.e. column 79 has string type labels. I would like to use a CNN to classify the data in this case and predict the target labels using the ... | You first have to know, if it is sensible to use CNN for your dataset. You could use sliding 1D-CNN if the features are sequential eg) ECG, DNA, AUDIO. However I doubt that this is not the case for you. Using a Fully Connected Neural Net would be a better choice. | 0.386912 | false | 1 | 6,361 |
2019-10-21 09:25:49.003 | Training in Python and Deploying in Spark | Is it possible to train an XGboost model in python and use the saved model to predict in spark environment ? That is, I want to be able to train the XGboost model using sklearn, save the model. Load the saved model in spark and predict in spark. Is this possible ?
edit:
Thanks all for the answer , but my question is r... | you can
load data/ munge data using pyspark sql,
then bring data to local driver using collect/topandas(performance bottleneck)
then train xgboost on local driver
then prepare test data as RDD,
broadcast the xgboost model to each RDD partition, then predict data in parallel
This all can be in one script, you spar... | 0 | false | 2 | 6,362 |
2019-10-21 09:25:49.003 | Training in Python and Deploying in Spark | Is it possible to train an XGboost model in python and use the saved model to predict in spark environment ? That is, I want to be able to train the XGboost model using sklearn, save the model. Load the saved model in spark and predict in spark. Is this possible ?
edit:
Thanks all for the answer , but my question is r... | You can run your python script on spark using spark-submit command so that can compile your python code on spark and then you can predict the value in spark. | 0 | false | 2 | 6,362 |
2019-10-22 07:03:31.320 | Converting the endianness type of an already existing binary file | I have a binary file on my PC that contains data in big-endian. The file contains around 121 MB.
The problem is I would like to convert the data into little-endian with a python script.
What is currently giving me headaches is the fact that I don't know how to convert an entire file. If I would have a short hex string... | We need a document or knowledge of the file's exact structure.
Suppose that there is a 4 byte file. If this file has just a int, we need to flip that. But if it is a combination of 4 char, we should leave it as it be.
Above all, you should find the structure. Then we can talk about the translation. I think there is no ... | 0 | false | 1 | 6,363 |
2019-10-24 17:06:41.350 | How to solve problem related to BigQueryError "reason": "invalid", "location": "test", "debugInfo": "", "message": "no such field." | Someone worked before with streaming data into (google) BigQuery using Google Cloud Functions (insert_rows_from_dataframe())?
My problem is it seems like sometimes the table schema is not updated immediately and when you try to load some data into table immediately after creation of a new field in the schema it returns... | Because the API operation on BigQuery side is not atomic, you can't avoid this case.
You can only mitigate the impact of this behavior and perform a sleep, a retries, or set a Try-catch to replay the insert_rows_from_dataframe() several times (not infinite, in case of real problem, but 5 times for example) until it pa... | 0.386912 | false | 1 | 6,364 |
2019-10-24 18:04:12.393 | Kivy_deps.glew.whl is not a supported wheel on this version | I was trying to install kivy_deps.glew(version).whl with
pip install absolute/path/to/file/kivy_deps.glew
And I get this error:
kivy_deps.glew(version).whl is not a supported wheel on this version
I searched in the web and saw that some people said that the problem is because you shoud have python 2.7 and I have p... | I fixed it. Just changed in the name of the file cp27 to cp37 | 1.2 | true | 1 | 6,365 |
2019-10-24 18:19:04.017 | How to connect ML model which is made in python to react native app | i made a one ML model in python now i want to use this model in react native app means that frontend will be based on react native and model is made on python,how can i connect both thing with each other | create a REST Api in flask/django to deploy your model on server.create end points for separate functions.Then call those end points in your react native app.Thats how it works. | 0.135221 | false | 2 | 6,366 |
2019-10-24 18:19:04.017 | How to connect ML model which is made in python to react native app | i made a one ML model in python now i want to use this model in react native app means that frontend will be based on react native and model is made on python,how can i connect both thing with each other | You can look into the CoreMl library for react native application if you are developing for IOS platform else creating a restAPI is a good option. (Though some developers say that latency is an issue but it also depends on what kind of model and dataset you are using ). | 0 | false | 2 | 6,366 |
2019-10-25 15:15:17.720 | can pandas autocorr handle irregularly sample timeseries data? | I have a dataframe with datetime index, where the data was sampled irregularly (the datetime index has gaps, and even where there aren't gaps the spacing between samples varies).
If I do:
df['my column'].autocorr(my_lag)
will this work? Does autocorr know how to handle irregularly sampled datetime data? | This is not quite a programming question.
Ideally, your measure of autocorrelation would use data measured at the same frequency/same time interval between observations. Any autocorr function in any programming package will simply measure the correlation between the series and whatever lag you want. It will not corre... | 0 | false | 1 | 6,367 |
2019-10-25 16:46:06.047 | Should modules always contain a class? | I'm writing a module which only contains functions. Is it good practice to put these inside a class, even if there are no class arguments and the __init__ function is pointless? And if so how should I write it? | It is good to build modules that contain a class for better organization and manipulation depending on how big the code is and how it will be used, but yes it is good to get use to building classes with methods in them. Can you post your code? | 0 | false | 1 | 6,368 |
2019-10-26 03:37:29.547 | Internet checksum -- Adding hex numbers together for checksum | I came across the following example of creating an Internet Checksum:
Take the example IP header 45 00 00 54 41 e0 40 00 40 01 00 00 0a 00 00 04 0a 00 00 05:
Adding the fields together yields the two’s complement sum 01 1b 3e.
Then, to convert it to one’s complement, the carry-over bits are added to the first 16-bits... | The IP header is added together with carry in hexadecimal numbers of 4 digits.
i.e. the first 3 numbers that are added are 0x4500 + 0x0054 + 0x41e0 +... | 0.201295 | false | 1 | 6,369 |
2019-10-27 18:36:01.290 | Access to data in external hdd from jupyter notebook | I am a python3 beginner, and I've been stuck on how to utilize my data at my scripts.
My data is stored in an external hdd and I am seeking for the way to retrieve the data to use on a program in jupyter notebook somehow.
Does anyone know how to make an access to external hdd? | Hard to say what the issue is without seeing any code. In general make sure your external hard drive is connected to your machine, and when loading your data (depends on what kind of data you want to use) specify the full path to your data. | 1.2 | true | 1 | 6,370 |
2019-10-28 17:00:37.963 | Scheduling Emails with Django? | I want to schedule emails using Django. Example ---> I want to send registered users their shopping cart information everyday at 5:00 P.M.
How would I do this using Django? I have read a lot of articles on this problem but none of them have a clear and definite solution. I don't want to implement a workaround.
Whats th... | There's no built-in way to do what you're asking. What you could do, though, is write a management command that sends the emails off and then have a crontab entry that calls that command at 5PM (this assumes your users are in the same timezone as your server).
Another alternative is using celery and celery-beat to cre... | 0.386912 | false | 1 | 6,371 |
2019-10-28 17:46:00.680 | Storing multiple values in one column | I am designing a web application that has users becoming friends with other users. I am storing the users info in a database using sqlite3.
I am brainstorming on how I can keep track on who is friends with whom.
What I am thinking so far is; to make a column in my database called Friendships where I store the various ... | It is possible to store a list as a string into an sql column.
However, you should instead be looking at creating a Friendships table with primary keys being the user and the friend.
So that you can call the friendships table to pull up the list of friends.
Otherwise, I would suggest looking into a Graph Database, wh... | 0.135221 | false | 2 | 6,372 |
2019-10-28 17:46:00.680 | Storing multiple values in one column | I am designing a web application that has users becoming friends with other users. I am storing the users info in a database using sqlite3.
I am brainstorming on how I can keep track on who is friends with whom.
What I am thinking so far is; to make a column in my database called Friendships where I store the various ... | What you are trying to do here is called a "many-to-many" relationship. Rather than making a "Friendships" column, you can make a "Friendship" table with two columns: user1 and user2. Entries in this table indicate that user1 has friended user2. | 0.135221 | false | 2 | 6,372 |
2019-10-30 12:29:29.603 | Display two animations at the same time with Manim | Manim noobie here.
I am trying to run two animations at the same time, notably, I'm trying to display a dot transitioning from above ending up between two letters. Those two letters should create some space in between in the meantime.
Any advice on how to do so? Warm thanks in advance. | To apply two transformations at the same time, you can do self.play(Transformation1, Transformation2). This way, since the two Transformations are in the same play statement, they will run simultaneously. | 1.2 | true | 1 | 6,373 |
2019-10-31 10:58:42.647 | Bloomberg API how to get only the latest quote to a given time specified by the user in Python? | I need to query from the BBG API the nearest quote to 14:00 o'clock for a number of FX currency pairs. I read the developers guide and I can see that reference data request provides you with the latest quote available for a currency however if I run the request at 14.15 it will give me the nearest quote to that time no... | Further to previous suggestions, you can start subscription to //blp/mktdata service before 14:00 for each instrument to receive stream of real-time ticks. Cache the last tick, when hitting 14:00 mark the cache as pre-14:00, then mark the first tick after as post:14, select the nearest to 14:00 from both. | 0 | false | 1 | 6,374 |
2019-11-01 03:45:32.480 | In a Python bot, how to run a function only once a day? | I have a Python bot running PRAW for Reddit. It is open source and thus users could schedule this bot to run at any frequency (e.g. using cron). It could run every 10 minutes, or every 6 hours.
I have a specific function (let's call it check_logs) in this bot that should not run every execution of this bot, but rather ... | Generally speaking, it's better (and easier) to use the external database or file. But, if you absolutely need it you could also:
Modify the script itself, e.g. store the date of the last run in commented out last line of the script.
Store the date of the last update on the web, for example, in your case it could be ... | 0 | false | 1 | 6,375 |
2019-11-01 12:00:44.503 | how to solve fbs error 'Can not find path ./libshiboken2.abi3.5.13.dylib'? | I have been able to freeze a Python/PySide2 script with fbs on macOS, and the app seems to work.
However, I got some errors from the freeze process stating:
Can not find path ./libshiboken2.abi3.5.13.dylib.
Does anyone know how to fix that? | Try to use the --runtime-tmpdir because while running the generated exe file it needs this file libshiboken2.abi3.5.13.dylib and unable hook that file.
Solution: use --add-data & --runtime-tmpdir to pyinstaller command line.
pyinstaller -F --add-data "path/libshiboken2.abi3.5.13.dylib":"**PATH"
--runtime-tmpdir temp_d... | 0 | false | 1 | 6,376 |
2019-11-02 21:15:06.757 | How to get to the first 4 numbers of an int number ? and also the 5th and 6th numbers for example | I have a function that checks if a date ( int number ) that is written in this format: "YYYYMMDD" is valid or not.
My question is how do i get to the first 4 numbers for example ( the year )?
the month ( the 5th and 6th number ) and the days.
Thanks | Probably the easiest way would be to convert it to a string and use substrings or regular expressions. If you need performance, use a combination of modulo and division by powers of 10 to extract the desired parts. | 0.201295 | false | 1 | 6,377 |
2019-11-02 21:21:16.990 | Can aubio be used to detect rhythm-only segments? | Does aubio have a way to detect sections of a piece of audio that lack tonal elements -- rhythm only? I tested a piece of music that has 16 seconds of rhythm at the start, but all the aubiopitch and aubionotes algorithms seemed to detect tonality during the rhythmic section. Could it be tuned somehow to distinguish ton... | Use a spectrum analyser to detect sections with high amplitude. If you program - you could take each section and make an average of the freqencies (and amplitudes) present to give you an idea of the instrument(s) involved in creating that amplitude peak.
Hope that helps - if you're using python I could give you some po... | 0 | false | 1 | 6,378 |
2019-11-03 23:03:00.293 | Project organization with Tensorflow.keras. Should one subclass tf.keras.Model? | I'm using Tensorflow 1.14 and the tf.keras API to build a number (>10) of differnet neural networks. (I'm also interested in the answers to this question using Tensorflow 2). I'm wondering how I should organize my project.
I convert the keras models into estimators using tf.keras.estimator.model_to_estimator and Tensor... | Subclass only if you absolutely need to. I personally prefer following the following order of implementation. If the complexity of the model you are designing, can not be achieved using the first two options, then of course subclassing is the only option left.
tf.keras Sequential API
tf.keras Functional API
Subclass... | 1.2 | true | 1 | 6,379 |
2019-11-04 08:48:35.323 | How to automate any application variable directly without GUI with Python? | I need to automate some workflows to control some Mac applications, I have got a way to do this with Pyautogui module,but I don't want to simulate keyboard or mouse actions anymore, I think if I can get the variables under any GUI elements and program with them directly it would be better, how can I do this? | This is not possible unless the application has some kind of api.
For Web GUIs you can use Selenium and directly select the DOM elements. | 0.386912 | false | 1 | 6,380 |
2019-11-04 20:54:43.360 | Is it possible to use socketCAN protocol on MacOS | I am looking to connect to a car wirelessly using socketCAN protocol on MacOS using the module python-can on python3. I don't know how to install the socketCAN protocol on MacOS. Pls help. | SocketCAN is implemented only for the Linux kernel. So it is not available on other operating systems. But as long as your CAN adapter is supported by python-can, you don't need SocketCAN. | 0 | false | 1 | 6,381 |
2019-11-05 07:32:04.260 | Is there any built-in functionality in django to call a method on a specific day of the month? | Brief intro of the app:
I'm working on MLM Webapp and want to make payment on every 15th and last day of every month.
Calculation effect for every user when a new user comes into the system.
What I did [ research ]
using django crontab extension
celery
Question is:
-- Concern about the database insertion/update qu... | For your 1st question, i don't think there will be any issue if you're using celery and celery beat for scheduling this task. Assuming your production server has 2 cores (so 4 threads hopefully), you can configure your celery worker (not the beat scheduler) to run using 1 worker with 1/2 thread. At the 15th of a month,... | 1.2 | true | 1 | 6,382 |
2019-11-05 12:45:32.743 | Cluster identification with NN | I have a dataframe containing the coordinates of millions of particles which I want to use to train a Neural network. These particles build individual clusters which are already identified and labeled; meaning that every particle is already assigned to its correct cluster (this assignment is done by a density estimatio... | These particles build individual clusters which are already identified
and labeled; meaning that every particle is already assigned to its
correct cluster (this assignment is done by a density estimation but
for my purpose not that relevant).
the challenge is now to build a network which does this clustering
... | 0 | false | 2 | 6,383 |
2019-11-05 12:45:32.743 | Cluster identification with NN | I have a dataframe containing the coordinates of millions of particles which I want to use to train a Neural network. These particles build individual clusters which are already identified and labeled; meaning that every particle is already assigned to its correct cluster (this assignment is done by a density estimatio... | If you want to treat clustering as a classification problem, then you can try to train the network to predict whether two points belong to the same clusters or to different clusters.
This does not ultimately solve your problems, though - to cluster the data, this labeling needs to be transitive (which it likely will no... | 0.201295 | false | 2 | 6,383 |
2019-11-05 20:27:30.517 | Implementing a built in GUI with pymunk and pygame in Python? | I am looking to make a python program in which I can have a sidebar GUI along with an interactive 2d pymunk workspace to the right of it, which is to be docked within the same frame.
Does anyone know how I might implement this? | My recommendation is to use pygame as your display. If an object is chosen, you can add it to the pymunk space at the same time as using pymunk to get each body's space and draw it onto the display. This is how I've written my games. | 0 | false | 1 | 6,384 |
2019-11-06 17:07:27.240 | Set PYTHONPATH for local Jupyter Notebook in VS Code | I'm using Visual Studio 1.39.2 on Windows 10. I'm very happy that you can run Jupyter Notebook natively through VS Code as of October this year (2019), but one thing I don't get right is how to set my PYTHONPATH prior to booting up a local Jupyter server.
What I want is to be able to import a certain module which is lo... | I'm a developer on this extension. If you have a specific path for module resolution we provide a setting for the Jupyter features called:
Python->Data Science: Run Startup Commands
That setting will run a series of python instructions in any Jupyter session context when starting up. In that setting you could just appe... | 0.545705 | false | 1 | 6,385 |
2019-11-07 02:14:50.033 | Script that opens cmd from spyder | I am working on a text adventure with python and the issue i am having is getting spyder to open a interactive cmd window. so far i have tried os.systems('cmd / k') to try and open this which it did but i could not get any code to run and kept getting an app could not run this file error. my current code runs off a imp... | (Spyder maintainer here) Cmd windows are hidden by default because there are some packages that open lot of them while running code (e.g. pyomo).
To change this behavior, you need to go to
Tools > Preferences > IPython console > Advanced settings > Windows adjustments
and deactivate the option called Hide command line ... | 0.201295 | false | 1 | 6,386 |
2019-11-07 08:11:10.283 | Retrieving information from a POST without forms in Django | I'm developing something like an API (more like a communications server? Idk what to call it!) to receive data from a POST message from an external app. Basically this other app will encounter an error, then it sends an error ID in a post message to my API, then I send off an email to the affected account.
My question... | A Django view doesn't have to use a form. Everything that was POSTed is there in request.POST which you may access directly. (I commonly do this to see which of multiple submit buttons was clicked).
Forms are a good framework for validating the data that was POSTed, but you don't have to use their abilities to genera... | 1.2 | true | 1 | 6,387 |
2019-11-07 08:18:43.410 | PyFPDF can't add page while specifying the size | on pyfpdf documentation it is said that it is possible to specify a format while adding a page (fpdf.add_page(orientation = '', format = '', same = False)) but it gives me an error when specifying a format.
error:
pdf.add_page(format = (1000,100)) TypeError: add_page() got an
unexpected keyword argument 'format'
i'... | Your problem is that two packages of pypdf exist, fpdf and fpdf2. They both use from fpdf import FPDF, but only fpdf2 has also a format= keyword in the add_page() method.
So you need to install the fpdf2 package. | 0.201295 | false | 1 | 6,388 |
2019-11-07 11:18:08.470 | Sharing variables between Python subprocesses | I have a Python program named read.py which reads data from serial communication every second, and another python program called calculate.py which has to take the real time values from read.py.
Using subprocess.popen('read.py',shell=True) I am able to run read.py from calculate.py
May I know how to read or use the va... | I can suggest writing values to a .txt file for later reading | 0.386912 | false | 1 | 6,389 |
2019-11-07 18:11:15.747 | Redeploying a Flask app in Google App Engine | How do I redeploy an updated version of the Flask web app in Google App Engine.
For example, I have running web app and now there are new features added into it and needs redeployment. How can I do that?
Also how to remove the previous version. | Add --no-promote if you want to deploy without routing service to the latest version deployed. | 0 | false | 1 | 6,390 |
2019-11-08 13:21:30.283 | Select a "mature" curve that best matches the slope of a new "immature" curve | I have a multitude of mature curves (days are plotted on X axis and data is >= 90 days old so the curve is well developed).
Once a week I get a new set of data that is anywhere between 0 and 14 days old.
All of the data (old and new), when plotted, follows a log curve (in shape) but with different slopes. So some weeks... | This seems more like a mathematical problem than a coding problem, but I do have a solution.
If you want to find how similar two curves are, you can use box-differences or just differences.
You calculate or take the y-values of the two curves for each x value shared by both the curves (or, if they share no x-values bec... | 0 | false | 1 | 6,391 |
2019-11-09 22:53:51.393 | Get N random non-overlapping substrings of length K | Let's say we have a string R of length 20000 (or another arbitrary length). I want to get 8 random non-overlapping sub strings of length k from string R.
I tried to partition string R into 8 equal length partitions and get the [:k] of each partition but that's not random enough to be used in my application, and the con... | You could simply run a loop, and inside the loop use the random package to pick a starting index, and extract the substring starting at that index. Keep track of the starting indices that you have used so that you can check that each substring is non-overlapping. As long as k isn't too large, this should work quickly a... | 0 | false | 1 | 6,392 |
2019-11-10 10:49:15.520 | How to run previously created Django Project | I am new to Django. I am using Python 3.7 with Django 2.2.6.
My Django development environment is as the below.
I am using Microsoft Visual Studio Code on a Windows 8.1 computer
To give the commands I am using 'DOS Command Prompt' & 'Terminal window' in
VS Code.
Created a virtual environment named myDjango
Created a ... | Simply navigate to the folder containing the app you want to manage using the command prompt.
The first cd should contain your parent folder.
The second cd should contain the folder that has your current project.
The third cd should be the specific app you want to work on.
After that, you can use the python manage.py t... | 1.2 | true | 1 | 6,393 |
2019-11-10 15:41:49.253 | python baserequesthandler client address is real established ip? | i have a question for you
I'm using the udp socket server using baserequesthandler on python
I want to protect the server against spoofing - source address changes.
Does client_address is the actual ip address of established to server ?
If not, how do I get the actual address? | Authenticate the packets so that you know that every message in session X from source address Y is from the same client.
By establishing a shared session key which is then used along with a sequence number to produce a hash of the packet keyed by the (sequence, session_key) pair. Which is then included in every packet.... | 0 | false | 1 | 6,394 |
2019-11-10 19:22:04.930 | How to use PostgreSQL in Python Pyramid without ORM | Do I need SQLAlchemy if I want to use PostgreSQL with Python Pyramid, but I do not want to use the ORM? Or can I just use the psycopg2 directly? And how to do that? | Even if you do not want to use ORM, you can still use SQLAlchemy's query
language.
If you do not want to use SQLAlchemy, you can certainly use psycopg2 directly. Look into Pyramid cookbook - MongoDB and Pyramid or CouchDB and Pyramid for inspiration. | 0 | false | 1 | 6,395 |
2019-11-10 23:16:41.710 | Python 3.7.3 Inadvertently Installed on Mac OS 10.15.1 - Included in Xcode Developer Tools 11.2 Now? | I decided yesterday to do a clean install of Mac OS (as in, erase my entire disk and reinstall the OS).
I am on a Macbook Air 2018. I did a clean install of Mac OS 10.15.1.
I did this clean install due my previous Python environment being very messy.
It was my hope that I could get everything reigned in and installed p... | The command line tool to run the python 2.7 environment is at /usr/bin/python, but the framework and dependencies for it are in /System. This includes the Python.app bundle, which is just a wrapper for scripts that need to run using the Mac's UI environment.
Although these files are separate executables, it's likely th... | 1.2 | true | 1 | 6,396 |
2019-11-11 00:39:28.400 | How to access MySQL database that is on another machine, located in a different locations (NOT LOCAL) with python | I am finished with my project and now I want to put it on my website where people could download it and use it. My project is connected to my MySQL and it works on my machine. On my machine, I can read, and modify my database with python. It obviously, will not work if a person from another country tries to access it. ... | If I'm understanding correctly, you want to run a MySQL server from your home PC and allow others to connect and access data? Well, you would need to make sure the correct port is forwarded in your router and firewall, default is TCP 3306. Then simply provide the user with your current IP address (could change).
Deter... | 0 | false | 1 | 6,397 |
2019-11-12 04:54:01.377 | Is there a dynamic scheduling system for better implementation of a subscription based payment system? | I was making a subscription payment system from scratch in python in Django. I am using celery-beat for a scheduled task with RabbitMQ as a queue broker. django_celery_beat uses DatabaseScheduler which is causing problems.
Takes a long time to dispatch simple-task to the broker. I was using it to expire users. For som... | I have a long winding solution that I implemented for a similar project.
First I save the schedule as a model in the database
Next I have a cron job that gets the entries that need to be run for that day
Then schedule those jobs as normal Celery jobs by setting the ETA based on the time set in the schedule model.
Thi... | 0 | false | 1 | 6,398 |
2019-11-12 12:52:29.447 | How do I customise the flask-user registration and login functions? | I want to customise the functions that process the results of completing the flask-user registration and login forms. I know how to customise the html forms themselves, but I want to change how flask-user performs the registration process. For example, I want to prevent the flask-user login and registration process fro... | You seem to be asking about the flask-user package - however you tagged this with flask-security (which is a different package but offers similar functionality). I can answer for flask-security-too (my fork of the original flask-security) - if you are/want to use flask-user - it might be useful to change your tags.
In ... | 0 | false | 1 | 6,399 |
2019-11-12 13:47:52.050 | How I can debug two-language program? | I use Python as a high-level wrapper and a loaded C++ kernel in the form of a binary library to perform calculations. I debug high level Python code in IDE Eclipse in the usual way, but how do I debug C++ code?
Thank you in advance for your help. | Try using gdb's "attach " command (or "gdb -p " command-line option) to attach to the python process that has the C++ kernel library loaded. | 0.386912 | false | 1 | 6,400 |
2019-11-13 08:29:13.933 | Why my Python command doesn't work in Windows 10 CMD? | I have added the C:\Users\Admin\Anaconda3\python.exe path to my system environment variables PATH but still when I run python command it opens Windows app store! Why bthis happens and how to fix it? | the PATH variable should contain
C:\Users\Admin\Anaconda3
not
C:\Users\Admin\Anaconda3\python.exe | 1.2 | true | 1 | 6,401 |
2019-11-13 11:59:54.057 | Automate downloading of certain csv files from a website | I am trying to automate downloading of certain csv files from a website.
This is how I manually do it:
I log in to the website.
Click on the button export as csv.
The file gets downloaded.
The problem is the button does not have any link to it so I was not able to automate it using wget or requests. | You can use selenium in python. There is an option to click using "link text" or "partial link text". It is quite easy and efficient.
driver.findElement(By.linkText("click here")).click()
It kind of looks like this. | 0 | false | 1 | 6,402 |
2019-11-13 12:45:22.860 | Python does not work after installing fastai and boto3. Permission denied // Python was not found | Last thing I did was pip install boto3 and fastai through git bash yesterday. I can't imagine if anything else could have had any influence.
I have been using python for a few months now, but today it stopped running. I opened my
Sublime Text - and after running some simple code I got:
"Python was not found but can be ... | So, I gave up and just installed the recommended link from Microsoft store. So now I possibly have 4 pythons with 2 different versions in 3 locations, but hey.... it works :)
Regarding a comment below my first questions:
When I run $ ls -l which python in GITbash, it gives:
-rwxr-xr-x 1 ... 197121 97296 Mar 25 2019 /c... | 0 | false | 1 | 6,403 |
2019-11-13 13:05:07.793 | Is there a way to change TCP settings for Django project? | I have been working on a project built with Django. When I run profiler due to slowness of a page in project, this was a line of the result:
10 0.503 0.050 0.503 0.050 {method 'recv_into' of '_socket.socket' objects}
Which says almost 99% of passed time was for the method recv_into(). After some research,... | Are you using cache settings in the settings.py file? Please check that maybe you have tcp_nodelay enable there, if so then remove it or try to clear browser cache. | -0.101688 | false | 1 | 6,404 |
2019-11-13 14:01:57.823 | How does this Fibonacci Lambda function work? | Am a beginner on Python (self studying) and got introduced to Lambda (nameless) function but I am unable to deduce the below expression for Fibonacci series (got from Google) but no explanation available online (Google) as to how this is evaluated (step by step). Having a lot of brain power here, I thought somebody can... | Break it down piece by piece:
lambda n: - defines a function that takes 1 argument (n); equivalent to an anonymous version of: def somefunc(n):
reduce() - we'll come back to what it does later; as per docs, this is a function that operates on another function, an iterable, and optionally some initial value, in that ord... | 1.2 | true | 1 | 6,405 |
2019-11-13 16:38:11.820 | Printing top few lines of a large JSON file in Python | I have a JSON file whose size is about 5GB. I neither know how the JSON file is structured nor the name of roots in the file. I'm not able to load the file in the local machine because of its size So, I'll be working on high computational servers.
I need to load the file in Python and print the first 'N' lines to unde... | You can use the command head to display the N first line of the file. To get a sample of the json to know how is it structured.
And use this sample to work on your data extraction.
Best regards | -0.201295 | false | 1 | 6,406 |
2019-11-14 00:50:56.010 | get json data from host that requires headers={'user-agent', 'cookie', x-xsrf-token'} | There is a server that contains a json dataset that I need
I can manually use chrome to login
to the url and use chrome developer tool to read the request header for said json data
I determined that the minimum required headers that should be sent to the json endpoint are ['cookie', 'x-xsrf-token', 'user-agent']
I don... | Based on pguardiario's comment
Sessions cookies and csrf-token are provided by the host when a request is made against the Origin url. These values are needed to make subsequent requests against the endpoint with the JSON payload. By using request.session() against the Origin url, and then updating the header when usin... | 1.2 | true | 1 | 6,407 |
2019-11-15 04:01:44.763 | Regex Match for Non Hyphenated Words - Python | I am trying to create a regex expression in Python for non-hyphenated words but I am unable to figure out the right syntax.
The requirements for the regex are:
It should not contain hyphens AND
It should contain atleast 1 number
The expressions that I tried are:=
^(?!.*-)
This matches all non-hyphenated words bu... | I came up with -
^[^-]*\d[^-]*$
so we need at LEAST one digit (\d)
We need the rest of the string to contain anything BUT a - ([^-])
We can have unlimited number of those characters, so [^-]*
but putting them together like [^-]*\d would fail on aaa3- because the - comes after a valid match- lets make sure no dashes ca... | 0.386912 | false | 1 | 6,408 |
2019-11-15 07:07:23.633 | How do I link to a specific page of a PDF document inside a cell in Excel? | I am writing a python code which writes a hyperlink into a excel file.This hyperlink should open in a specific page in a pdf document.
I am trying something like
Worksheet.write_url('A1',"C:/Users/...../mypdf#page=3") but this doesn't work.Please let me know how this can be done. | Are you able to open the pdf file directly to a specific page even without xlsxwriter? I can not.
From Adobe's official site:
To target an HTML link to a specific page in a PDF file, add
#page=[page number] to the end of the link's URL.
For example, this HTML tag opens page 4 of a PDF file named
myfile.pdf:
Note:... | 0.386912 | false | 1 | 6,409 |
2019-11-16 04:57:26.760 | Using import in Python | So I’m a new programmer and starting to use Python 3, and I see some videos of people teaching the language and use “import”. My question is how they know what to import and where you can see all the things you can import. I used import math in one example that I followed along with, but I see other videos of people us... | In all programming languages, whenever you actually need a library, you should import it. For example, if you need to generate a random number, search for this function in your chosen programming language, find the appropriate library, and import it into your code. | 0.135221 | false | 1 | 6,410 |
2019-11-16 05:22:32.853 | Spyder Editor - How to Disable Auto-Closing Brackets | Does anyone know how to make Spyder stop automatically inserting closing brackets?
It often results in complete mess when you have multiple levels of different brackets. I had a look around and could only find posts about auto-closing quotes, but I'm not really interested in these. But those brackets are making me slig... | In Spyder 4 and Spyder 5 go to:
Tools - Preferences - Editor - Source code
and deselect the following items:
Automatic insertion of parentheses, braces and brackets
Automatic insertion of closing quotes (since it's the same nuisance than with brackets) | 1.2 | true | 1 | 6,411 |
2019-11-17 00:01:23.980 | Get all keys in a hash-table that satisfy certain arithmetic property | Let's say I have a Hash-table, each key is defined as a tuple with 4 integers (A, B, C, D). where are integers represent a quantity of a certain attribute, and its corresponding value is a tuple of gears that satisfy (A, B, C, D).
I wanted to write a program that do the following: with any given attribute tuple (x, y, ... | Just write a function that loops over all values in the table and checks them one by one. The function will take the table and i as arguments. | 1.2 | true | 1 | 6,412 |
2019-11-18 00:40:56.233 | How to create a different workflow depending on result of last run? | I am trying to accomplish the following task using Airflow. I have an address and I want to run 3 different tasks taskA, taskB, taskC. Each task returns True if the address was detected. Store the times when each of the functions detected the address.
I want to accomplish the below logic.
Run all three tasks to start ... | You can get last run status value from airflow db. | 0 | false | 1 | 6,413 |
2019-11-18 18:32:02.663 | How to allow my computer to download .py files from an email | I am unable to download a .py file from an email. I get the error "file not supported." The file was saved from a Jupyter-notebook script.
I have Python 3.6.6 and Jupyter downloaded on my Windows 10 laptop and tried to access the file through Chrome and through my computer's email app, but this didn't resolve the probl... | Generally email providers block any thing which can possibly execute on clients machine.
Best option to share will be transfer via email will be .py.txt
or any cloud drives. | 0 | false | 1 | 6,414 |
2019-11-19 12:15:40.287 | Use of views in jam.py framework | for an academic project, I am currently using the python framework jam.py 5.4.83 to develop a back office for a new company.
I would like to use views instead of tables for reporting but I don't find how to do it, I can only import data from tables.
So if someone already used this framework, I would be very thankful.
... | the use of database views are not supported in Jam.py
However, you can import tables as read only if used for reporting.
Than you can build Reports as you would.
Good luck. | 0 | false | 1 | 6,415 |
2019-11-19 15:26:28.493 | How to find the intersecting area of two sub images using OpenCv? | Let's say there are two sub images of a large image. I am trying to detect the overlapping area of two sub images. I know that template matching can help to find the templates. But i'm not sure how to find the intersected area and remove them in either one of the sub images. Please help me out. | MatchTemplate returns the most probable position of a template inside a picture. You could do the following steps:
Find the (x,y) origin, width and height of each picture inside the larger one
Save them as rectangles with that data(cv::Rect r1, cv::Rect r2)
Using the & operator, find the overlap area between both rect... | 0.201295 | false | 1 | 6,416 |
2019-11-19 19:57:43.280 | How to scale numpy matrix in Python? | I have this numpy matrix:
x = np.random.randn(700,2)
What I wanna do is scale the values of the first column between that range: 1.5 and 11 and the values of the second column between `-0.5 and 5.0. Does anyone have an idea how I could achieve this? Thanks in advance | subtract each column's minimum from itself
for each column of the result divide by its maximum
for column 0 of that result multiply by 11-1.5
for column 1 of that result multiply by 5--0.5
add 1.5 to column zero of that result
add -0.5 to column one of that result
You could probably combine some of those steps. | 0.386912 | false | 1 | 6,417 |
2019-11-20 13:02:15.587 | zsh: command not found: import | I'm using MAC OS Catalina Version 10.15.1 and I'm working on a python project. Every time I use the command "import OS" on the command line Version 2.10 (433), I get this message: zsh: command not found: import. I looked up and followed many of the solutions listed for this problem but none of them have worked. The com... | Don't capitalize it.
import os | 0 | false | 2 | 6,418 |
2019-11-20 13:02:15.587 | zsh: command not found: import | I'm using MAC OS Catalina Version 10.15.1 and I'm working on a python project. Every time I use the command "import OS" on the command line Version 2.10 (433), I get this message: zsh: command not found: import. I looked up and followed many of the solutions listed for this problem but none of them have worked. The com... | The file is being interpreted as zsh, not a python. I suggest you to add this to the first line:
#!/usr/bin/env python | 0.201295 | false | 2 | 6,418 |
2019-11-20 16:21:07.560 | Starting conda pompt from cmd | I want to start the conda Prompt from cmd, because I want to use the promt as a terminal in Atom.io.
There is no Conda.exe and the path to conda uses cmd to jump into the prompt. But how do I start it inside of cmd? | I guess what you want is to change to Anaconda shell using cmd, you can find the address for your Anaconda and run the following in your cmd:
%windir%\System32\cmd.exe "/K" "Address"\anaconda3
Or, you can find your Anaconda prompt shortcut, right click on that, and open its properties window. In the properties window, ... | 0.201295 | false | 1 | 6,419 |
2019-11-20 19:03:29.667 | Prevent internal POST methods to be called by third parties | I'm worried about the security of my web app, I'm using Django and sometimes I use AJAX to call a Django url that will execute code and then return an HttpResponse with a message according the result, the user never notice this as it's happening in background.
However, if the url I'm calling with AJAX is, for example, ... | Not only django but this behavior is common in all others,
You can only apply 2 solution,
Apply CORS and just allow your domain, to block other domain to access data from your API response, but this will not effective if a user direct call your API end-point.
As lain said in comment, If data is sensitive or user's per... | 0 | false | 1 | 6,420 |
2019-11-21 15:43:05.370 | Looping through webelements with selenium Python | I am currently trying to automate a process using Selenium with python, but I have hit a roadblock with it. The list is part of a list which is under a tree. I have identified the base of the tree with the following xpath
item = driver.find_element_by_xpath("//*[@id='filter']/ul/li[1]//ul//li")
items = item.find_eleme... | I have managed to find a work around and get Selenium to do what i need.
I had to call the javascript execution, so instead of trying to get
WebDriverWait(driver, 10).until(EC.element_to_be_clickable((k.find_element(By.TAG_NAME, "input")))).click() to work, i just used
driver.execute_script("arguments[0].click();", ... | 1.2 | true | 1 | 6,421 |
2019-11-23 19:16:37.407 | How can I update the version of SQLite in my Flask/SQLAlchemy App? | I wish to use the latest version of SQLite3 (3.30.1) because of its new capability to handle SQL 'ORDER BY ... ASC NULLS LAST' syntax as generated by the SQLAlchemy nullslast() function.
My application folder env\Scripts contains the existing (old) version of sqlite3.dll (3.24), however when I replace it, there is no e... | I have found that the applicable sqlite3.dll is determined first by a Windows OS defined lookup. It first goes through the PATH variable, finding and choosing the first version it finds in any of those paths.
In this case, probably true for all pyCharm/VirtualEnv setups, a version found in my user AppData\Local\Program... | 1.2 | true | 1 | 6,422 |
2019-11-25 12:59:29.660 | Python and Telethon: how to handle sw distribution | I developed a program to interact between Telegram and other 3rd party Software. It's written in Python and I used the Telethon library.
Everything works fine, but since it uses my personal configuration including API ID, API hash, phone number and username, I would like to know how to handle all of this if I wanted t... | Since the API ID and the API Hash in Telegram are supposed to be distributed with your client all you need to do is prompt the user for their Phone Number.
You could do this using a GUI Library (like PySide2 using QInputDialog) or if it is a command line application using input(). Keep in mind that the user will also ... | 1.2 | true | 1 | 6,423 |
2019-11-25 18:14:02.303 | Pyarmor Pack Python File Check Restrict Mode Failed | So i am trying to Pack my python script with pyarmor pack however, when i pack the script it does not work, it throws check restrict mode failed. If i Obfuscate the script normally with pyarmor obfuscate instead of pack the script it works fine, and is obfuscated fine. This version runs no problem. Wondering how i can ... | I had this problem, fixed by adding --restrict=0
For example: pyarmor obfuscate --restrict=0 app.py | 0.386912 | false | 1 | 6,424 |
2019-11-26 14:11:58.723 | how to find cosine similarity in a pre-computed matrix with a new vector? | I have a dataframe with 5000 items(rows) and 2048 features(columns).
Shape of my dataframe is (5000, 2048).
when I calculate cosine matrix using pairwise distance in sklearn, I get (5000,5000) matrix.
Here I can compare each other.
But now If I have a new vector shape of (1,2048), how can find cosine similarity of t... | Since cosine similarity is symmetric. You can compute the similarity meassure with the old data matrix, that is similarity between the new sample (1,2048) and old matrix (5000,2048) this will give you a vector of (5000,1) you can append this vector into the column dimension of the pre-computed cosine matrix making it (... | 0 | false | 2 | 6,425 |
2019-11-26 14:11:58.723 | how to find cosine similarity in a pre-computed matrix with a new vector? | I have a dataframe with 5000 items(rows) and 2048 features(columns).
Shape of my dataframe is (5000, 2048).
when I calculate cosine matrix using pairwise distance in sklearn, I get (5000,5000) matrix.
Here I can compare each other.
But now If I have a new vector shape of (1,2048), how can find cosine similarity of t... | The initial (5000,5000) matrix encodes the similarity values of all your 5000 items in pairs (i.e. symmetric matrix).
To have the similarities in case of a new item, concatenate and make a (5001, 2048) matrix and then estimate similarity again to get (5001,5001)
In other words, you can not directly use the (5000,5000) ... | 0 | false | 2 | 6,425 |
2019-11-27 09:52:59.383 | SQLITE3 / Python - Database disk image malformed but integrity_check ok | My actual problem is that python sqlite3 module throws database disk image malformed.
Now there must be a million possible reasons for that. However, I can provide a number of clues:
I am using python multiprocessing to spawn a number of workers that all read (not write) from this DB
The problem definitely has to do w... | The problem was for the following reason (and it had happened to me before):
Using multiprocessing with sqlite3, make sure to create a separate connection for each worker!
Apparently this causes problems with some setups and sometimes doesn't. | 0 | false | 1 | 6,426 |
2019-11-28 11:25:12.167 | Fail build if coverage lowers | I have GitHub Actions that build and test my Python application. I am also using pytest-cov to generate a code coverage report. This report is being uploaded to codecov.io.
I know that codecov.io can't fail your build if the coverage lowers, so how do I go about with GitHub Actions to fail the build if the coverage dro... | There is nothing built-in, instead you should use one of the many integrations like sonarqube, if I don’t want to write a custom script. | 0 | false | 1 | 6,427 |
2019-12-01 04:16:36.060 | what's command to list all the virtual environments in venv? | I know in conda I can use conda env list to get a list of all conda virtual environments, what's the corresponding command in python venv that can list all the virtual environments in a given venv? also, is there any way I can print/check the directory of current venv? somehow I have many projects that have same name .... | Virtual environments are simple a set of files in a directory on your system. You can find them the same way you would find images or documents with a certain name. For example, if you are using Linux or macOS, you could run find / | grep bin/activate in terminal. Not too sure about Windows but I suspect you can search... | 0 | false | 2 | 6,428 |
2019-12-01 04:16:36.060 | what's command to list all the virtual environments in venv? | I know in conda I can use conda env list to get a list of all conda virtual environments, what's the corresponding command in python venv that can list all the virtual environments in a given venv? also, is there any way I can print/check the directory of current venv? somehow I have many projects that have same name .... | I'm relatively new to python venv as well. I have found that if you created your virtual environment with python -m venv <yourvenvname> with in a project folder.
I'm using windows, using cmd, for example, you have a Dash folder located in C:\Dash, when you created a venv called testenv by
python -m venv testenv,
you ca... | 0.201295 | false | 2 | 6,428 |
2019-12-02 14:13:17.757 | Localization with RPLider (Python) | we are currently messing around with an Slamtec RPLidar A1. We have a robot with the lidar mounted on it.
Our aim is to retrieve a x and y position in the room. (it's a closed room, could have more than 4 corners but the whole room should be recognized once (it does not matter where the RPlidar stands).
Anyway the flo... | Any sensor sees itself in the center of the environment. The idea of recording map is good one, if not. You can presume that any of the corners can be your zero points, you your room is not square, you can measure length of the wall and and you down to 2 points. Unfortunately if you don't have any additional markers in... | 0 | false | 1 | 6,429 |
2019-12-02 17:35:56.597 | A function possible inputs in PYTHON | How can I quickly check what are the possible inputs to a specific function? For example, I want to plot a histogram for a data frame: df.hist(). I know I can change the bin size, so I know probably there is a way to give the desired bin size as an input to the hist() function. If instead of bins = 10 I use df.hist(bin... | Since your question tag contains jupyter notebook I am assuming you are trying on it. So in jupyter notebook 2.0 Shift+Tab would give you function arguments. | 0.296905 | false | 1 | 6,430 |
2019-12-03 02:24:09.220 | How to send data from Python script to JavaScript and vice-versa? | I am trying to make a calculator (with matrix calculation also). I want to make interface in JavaScript and calculation stuff in Python. But I don't know how to send parameters from python to JavaScript and from JavaScript to python.
Edit: I want to send data via JSON (if possible). | You would have to essentially set both of them up as API's and access them via endpoints.
For Javascript, you can use node to set up your API endpoint, and for Python use Flask. | 0.201295 | false | 1 | 6,431 |
2019-12-03 05:29:29.123 | Is there any operator in Python to check and compare the type and value? | I know that other languages like Javascript have
a == and === operator also they have a != and !== operator does Python also has a === and !== (ie. a single operator that checks the type and compares the value at the same time like === operator) and if not how can we implement it. | No, and you can't really implement it yourself either.
You can check the type of an object with type, but if you just write a function that checks type(x) is type(y) and x == y, then you get results like [1] and [1.0] showing up as equivalent. While that may fulfill the requirements you stated, I've never seen a case w... | 0.081452 | false | 1 | 6,432 |
2019-12-04 11:32:33.307 | Using python and spacy text summarization | Basically i am trying to do text summarize using spacy and nltk in python. Now i want to summarize the normal 6-7 lines text and show the summarized text on the localhost:xxxx so whenever i run that python file it will show on the localhost.
Can anyone tell is it possible or not and if it is possible how to do this. S... | You have to create a RESTFUL Api using FLASK or DJAngo with some UI elements and call your model. Also you can use displacy( Spacy UI Bro) Directly on your system. | 1.2 | true | 1 | 6,433 |
2019-12-05 06:08:12.167 | Find the maximum result after collapsing an array with subtractions | Given an array of integers, I need to reduce it to a single number by repeatedly replacing any two numbers with their difference, to produce the maximum possible result.
Example1 - If I have array of [0,-1,-1,-1] then performing (0-(-1)) then (1-(-1)) and then (2-(-1)) will give 3 as maximum possible output
Example2- [... | The other answers are fine, but here's another way to think about it:
If you expand the result into individual terms, you want all the positive numbers to end up as additive terms, and all the negative numbers to end up as subtractive terms.
If you have both signs available, then this is easy:
Subtract all but one of ... | 0 | false | 1 | 6,434 |
2019-12-05 17:41:59.977 | Combining logistic and continuous regression with scikit-learn | In my dataset X I have two continuous variables a, b and two boolean variables c, d, making a total of 4 columns.
I have a multidimensional target y consisting of two continuous variables A, B and one boolean variable C.
I would like to train a model on the columns of X to predict the columns of y. However, having tr... | If your target data Y has multiple columns you need to use multi-task learning approach. Scikit-learn contains some multi-task learning algorithms for regression like multi-task elastic-net but you cannot combine logistic regression with linear regression because these algorithms use different loss functions to optimiz... | 0 | false | 2 | 6,435 |
2019-12-05 17:41:59.977 | Combining logistic and continuous regression with scikit-learn | In my dataset X I have two continuous variables a, b and two boolean variables c, d, making a total of 4 columns.
I have a multidimensional target y consisting of two continuous variables A, B and one boolean variable C.
I would like to train a model on the columns of X to predict the columns of y. However, having tr... | What i understand you want to do is to is to train a single model that both predicts a continuous variable and a class. You would need to combine both loses into one single loss to be able to do that which I don't think is possible in scikit-learn. However I suggest you use a deep learning framework (tensorflow, pytorc... | 0 | false | 2 | 6,435 |
2019-12-06 14:08:01.030 | How to build whl package for pandas? | Hi I have a built up Python 2.7 environment with Ubuntu 19.10.
I would like to build a whl package for pandas.
I pip installed the pandas but do not know how to pack it into whl package.
May I ask what I should do to pack it.
Thanks | You cannot pack back an installed wheel. Either you download a ready-made wheel with pip download or build from sources: python setup.py bdist_wheel (need to download the sources first). | 1.2 | true | 1 | 6,436 |
2019-12-07 11:29:54.817 | Walls logic in Pygame | I'm making a game with Pygame, and now I stuck on how to process collision between player and wall. This is 2D RPG with cells, where some of them are walls. You look on world from top, like in Pacman.
So, I know that i can get list of collisions by pygame.spritecollide() and it will return me list of objects that playe... | If you know the location of the centre of the cell and the location of the player you can calculate the x distance and the y distance from the wall at that point in time. Would it be possible at that point to take the absolute value of each distance and then take the largest value as the direction to push the player in... | 1.2 | true | 1 | 6,437 |
2019-12-07 17:17:25.127 | How to load values related to selected multiple options in Django | Thank you all for always willing to help.
I have a Django app with countries and state choices fields. However, I have no idea whatsoever on how to load the related states for each country. What I mean here is, if I choose "Nigeria" in the list of countries, how can I make all Nigerian states to automatically load in t... | You have to create many to many field state table, then you can multiple select state as per country.
this feature available on django- country package or django- cities package. | 0 | false | 1 | 6,438 |
2019-12-08 17:44:54.277 | Find how similar a text is - One Class Classifier (NLP) | I have a big dataset containing almost 0.5 billions of tweets. I'm doing some research about how firms are engaged in activism and so far, I have labelled tweets which can be clustered in an activism category according to the presence of certain hashtags within the tweets.
Now, let's suppose firms are tweeting about an... | Sam H has a great answer about using your dataset as-is, but I would strongly recommend annotating data so you have a few hundred negative examples, which should take less than an hour. Depending on how broad your definition of "activism" is that should be plenty to make a good classifier using standard methods. | 0.201295 | false | 1 | 6,439 |
2019-12-09 10:34:14.533 | Existing Tensorflow model to use GPU | I made a TensorFlow model without using CUDA, but it is very slow. Fortunately, I gained access to a Linux server (Ubuntu 18.04.3 LTS), which has a Geforce 1060, also the necessary components are installed - I could test it, the CUDA acceleration is working.
The tensorflow-gpu package is installed (only 1.14.0 is worki... | Not enough to give exact answer.
Have you installed tensorflow-gpu separately? Check using pip list.
Cause, initially, you were using tensorflow (default for CPU).
Once you use want to use Nvidia, make sure to install tensorflow-gpu.
Sometimes, I had problem having both installed at the same time. It would always go f... | 0 | false | 1 | 6,440 |
2019-12-09 12:23:35.760 | how to select the metric to optimize in sklearn's fit function? | When using tensorflow to train a neural network I can set the loss function arbitrarily. Is there a way to do the same in sklearn when training a SVM? Let's say I want my classifier to only optimize sensitivity (regardless of the sense of it), how would I do that? | This is not possible with Support Vector Machines, as far as I know. With other models you might either change the loss that is optimized, or change the classification threshold on the predicted probability.
SVMs however minimize the hinge loss, and they do not model the probability of classes but rather their separat... | 1.2 | true | 1 | 6,441 |
2019-12-09 16:29:01.433 | conda environment: does each new conda environment needs a new kernel to work? How can I have specific libraries for all my environments? | I use ubuntu (through Windows Subsystem For Linux) and I created a new conda environment, I activated it and I installed a library in it (opencv). However, I couldn't import opencv in Jupyter lab till I created a new kernel that it uses the path of my new conda environment. So, my questions are:
Do I need to create a ... | To my best understanding:
You need ipykernel in each of the environments so that jupyter can import the other library.
In my case, I have a new environment called TensorFlow, then I activate it and install the ipykernel, and then add it to jupyter kernelspec. Finally I can access it in jupyter no matter the environment... | 0.201295 | false | 1 | 6,442 |
2019-12-11 15:38:28.387 | JupyterLab - how to find out which python venv is my session running on? | I am running venv based kernel and I am getting trouble in returning a proper answer from which python statement from my JupyterLab notebook. When running this command from terminal where I have my venv activated it works (it returns a proper venv path ~/venvs/my_venv/bin/python), but it does not work in the notebook.
... | It sounds like you are starting the virtual environment inside the notebook, so that process's PATH doesn't reflect the modifications made by the venv. Instead, you want the path of the kernel that's actually running: that's sys.executable. | 1.2 | true | 2 | 6,443 |
2019-12-11 15:38:28.387 | JupyterLab - how to find out which python venv is my session running on? | I am running venv based kernel and I am getting trouble in returning a proper answer from which python statement from my JupyterLab notebook. When running this command from terminal where I have my venv activated it works (it returns a proper venv path ~/venvs/my_venv/bin/python), but it does not work in the notebook.
... | maybe it's because you are trying to run the command outside venv
try source /path/to/venv/bin/active first and then try which python | -0.201295 | false | 2 | 6,443 |
2019-12-12 05:29:34.497 | Can a db handle be passed from a perl script to a python script? | I've been trying to look for ways to call my python script from my perl script and pass the database handle from there while calling it. I don't want to establish another connection in my python script and just use the db handle which is being used by the perl script. Is it even possible and if yes then how? | There answer is that almost all databases (Oracle, MySQL, Postgresql) will NOT allow you to pass open DB connections between processes (even parent/child). This is a limit on the databases connection, which will usually be associated with lot of state information.
If it was possible to 'share' such a connection, it wil... | 1.2 | true | 1 | 6,444 |
2019-12-12 10:03:34.553 | Error when installing Tensorflow - Python 3.8 | I'm new to programming and following a course where I must install Tensorflow. The issue is that I'm using Python 3.8 which I understand isn't supported by Tensorflow.
I've downloaded Python 3.6 but I don't know how to switch this as my default version of python.
Would it be best to set up a venv using python 3.6 for m... | If you don't want to use Anaconda or virtualenv, then actually multiple Python versions can live side by side. I use Python38 as my default and Python35 for TensorFlow until they release it for Python38. If you wish to use the "non-default" Python, just invoke with the full path of the python.exe (or create a shortcut/... | 0 | false | 2 | 6,445 |
2019-12-12 10:03:34.553 | Error when installing Tensorflow - Python 3.8 | I'm new to programming and following a course where I must install Tensorflow. The issue is that I'm using Python 3.8 which I understand isn't supported by Tensorflow.
I've downloaded Python 3.6 but I don't know how to switch this as my default version of python.
Would it be best to set up a venv using python 3.6 for m... | it would have been nice if you would have the share the error screenshot
though as per i got the case
tensorflow work in both 3.8 and 3.6 just you have to check that you have 64bit version not 32 bit
you can acess both version from thier respective folder no need to install a venv | 0 | false | 2 | 6,445 |
2019-12-12 14:51:24.720 | How to search pattern in big binary files efficiently | I have several binary files, which are mostly bigger than 10GB.
In this files, I want to find patterns with Python, i.e. data between the pattern 0x01 0x02 0x03 and 0xF1 0xF2 0xF3.
My problem: I know how to handle binary data or how I use search algorithms, but due to the size of the files it is very inefficient to rea... | The common way when searching a pattern in a large file is to read the file by chunks into a buffer that has the size of the read buffer + the size of the pattern - 1.
On first read, you only search the pattern in the read buffer, then you repeatedly copy size_of_pattern-1 chars from the end of the buffer to the beginn... | 0.995055 | false | 1 | 6,446 |
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