zipline | A gem that lets you stream a zip file from rails

 by   fringd Ruby Version: Current License: MIT

kandi X-RAY | zipline Summary

kandi X-RAY | zipline Summary

zipline is a Ruby library. zipline has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

A gem to stream dynamically generated zip files from a rails application. Unlike other solutions that generate zips for user download, zipline does not wait for the entire zip file to be created (or even for the entire input file in the cloud to be downloaded) before it begins sending the zip file to the user. It does this by never seeking backwards during zip creation, and streaming the zip file over http as it is constructed. The advantages of this are:. Zipline now depends on zip tricks, and you might want to just use that directly if you have more advanced use cases.

            kandi-support Support

              zipline has a low active ecosystem.
              It has 199 star(s) with 59 fork(s). There are 10 watchers for this library.
              It had no major release in the last 6 months.
              There are 5 open issues and 31 have been closed. On average issues are closed in 58 days. There are 2 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of zipline is current.

            kandi-Quality Quality

              zipline has 0 bugs and 0 code smells.

            kandi-Security Security

              zipline has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              zipline code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              zipline is licensed under the MIT License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              zipline releases are not available. You will need to build from source code and install.
              Installation instructions, examples and code snippets are available.
              zipline saves you 140 person hours of effort in developing the same functionality from scratch.
              It has 350 lines of code, 17 functions and 5 files.
              It has medium code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi has reviewed zipline and discovered the below as its top functions. This is intended to give you an instant insight into zipline implemented functionality, and help decide if they suit your requirements.
            • Convert file to a file
            • Iterates over each IO object .
            • Writes a stream to a stream .
            • Handle the file .
            • Check if url is a valid URL
            • Stop the output .
            • Returns true if the object is given
            • Returns true if the attachment is active
            • Returns true if the object exists
            Get all kandi verified functions for this library.

            zipline Key Features

            No Key Features are available at this moment for zipline.

            zipline Examples and Code Snippets

            No Code Snippets are available at this moment for zipline.

            Community Discussions


            Jupyter Notebook Cannot Connect to Kernel, Likely due to Zipline / AssertionError
            Asked 2021-Apr-12 at 04:17

            All of my virtual environments work fine, except for one in which the jupyter notebook won't connect for kernel. This environment has Zipline in it, so I expect there is some dependency that is a problem there, even though I installed all packages with Conda.

            I've read the question and answers here, and unfortunately downgrading tornado to 5.1.1 didn't work nor do I get ValueErrors. I am, however, getting an AssertionError that appears related to the Class NSProcessInfo.

            I'm on an M1 Mac. Log from terminal showing the error below, and my environment file is below that. Can someone help me get this kernel working? Thank you!



            Answered 2021-Apr-04 at 18:14

            Figured it out.

            What works:



            Can an axios request be used to get a zip file from a Rails endpoint?
            Asked 2020-Dec-24 at 10:00

            I'm trying to make a request to a Rails controller method that responds with a zipped file. How to I make the frontend Axios request?

            Controller method:



            Answered 2020-Dec-24 at 10:00

            So I found this worked for me:

            Download all

            Instead of using a button with an onClick axios request that would stream a zipped file to it - which makes no sense - simply creating an anchor tag that has a link to the zip path will download it.

            As max pointed out headers: { 'Accept': 'application/zip' } would be the correct format to access it, but it doesn't make sense doing this.


            Checkout this answer. The browser will throw an error Resource interpreted as Document but transferred with MIME type application/zip.



            CSV not being loaded into pandas for zipline project
            Asked 2020-Jul-15 at 20:38

            I am trying to use zipline for backtesting and I am getting this error:



            Answered 2020-Jul-15 at 20:38

            Apparently you have to change something in the configuration of Zipline I found someone with the same problem in the comments sections of the tutorial and this is what he said to do:

            In User/Anaconda3/envs/[environment]/Lib/site-packages/zipline/data/



            How to install zipline module in pycharm?
            Asked 2020-Apr-19 at 19:15

            I am using pycharm as my IDE, I found problem to install zipline to pycharm. I have tried the method by pip install zipline, but it is not working.

            Are there any parts I missed or any guide to deal with it?



            Answered 2017-Mar-22 at 03:49

            To start, in PyCharm open Settings -> Project(XXX) -> Project Interpreter. Then click on the + icon in the top right of the screen, type Zipline in the search bar, then click on Install Package to install Zipline.

            You'll need to download the sample Quandl data, by running this on the command line:



            Can't change Anaconda env default python version
            Asked 2020-Mar-26 at 10:27

            I'm setting up my Anaconda enviroment recently,I have two enviroments:

            1. python3.7.6(which is same as Anaconda's python version).
            2. python3.5.6 which is suited for Zipline

            I checked the zipline eviroment's python version,it shows python3.5.6,BUT when I input "zipline" it showed this,I've added both python35 & python37 to my enviroment PATH.



            Answered 2020-Mar-26 at 10:27

            You have messed up your set up with this:

            I've added both python35 & python37 to my enviroment PATH

            Which results in a weird mix between your anaconda env and the version you have at C:\Python37

            From your question, I gather the following:

            1. You have anaconda installed with python 3.7
            2. You have created an environment zip35 which uses python version 3.5
            3. You have installed a seperate python 3.7 at C:\Python37
            4. You have manually added stuff to PATH

            To fix, do the following:

            1. Uninstall the C:\Python37, there is no valid reason to have that next to your anaconda installation. It just creates confusion
            2. Remove all custom modifications of PATH
            3. If you want to use python 3.5 and zipline, then use the zip35 environment, if you want python 3.7 then use the base env of anaconda or create a seperate one.



            Module not Found: zipline import
            Asked 2020-Mar-24 at 21:50

            Getting the following stack trace from line:



            Answered 2020-Mar-24 at 21:50

            The issue arose due to the presence of multiple versions of python. Using the python -m pip install command inside of the zipline/zipline repo, I was able to successful execute import zipline inside a python shell



            Does Zipline Support Renko Chart?
            Asked 2020-Jan-20 at 19:53

            Quantopian which is powered by zipline does not support renko charts. All charts on quantopian is smooth line. I was wondering if zipline supports renko charts?



            Answered 2020-Jan-20 at 19:53

            Zipline does not support renko charts yet !



            run_algorithm() fails because it cannot fetch data from the internet source (403 Forbidden)
            Asked 2020-Jan-09 at 16:56

            I tried to follow zipline's Quickstart:



            Answered 2020-Jan-09 at 16:56

            This issue is due to a change in IEX trading api which now requires an API key (account) to query it. I hope that it will be corrected and clarified in the documentation in the future and that retrieving data from external APIs would be much more easier.

            For now, you have two options:

            1. Change the benchmark code:



            Convert a csv to panel pandas for zipline
            Asked 2020-Jan-07 at 10:59

            I'm trying to convert a csv to a panel in pandas as follow, but jupyter keep alert "ValueError: Panel constructor not properly called!", although I've done as the guide in

            My csv file have structure:



            Answered 2020-Jan-07 at 10:59

            You can use the panel for ndarray or dict of dataframes. You can try this,



            SyntaxError: Generator expression must be parenthesized in Zipline
            Asked 2019-Sep-04 at 15:44

            i'm install zipline , i follow the website step

            when i type import zipline , give me error message , just like



            Answered 2019-Sep-04 at 15:44

            fixed , version only 2.7 and 3.5 , otherwise can't


            Community Discussions, Code Snippets contain sources that include Stack Exchange Network


            No vulnerabilities reported

            Install zipline

            Add this line to your application's Gemfile:.


            Fork itCreate your feature branch (git checkout -b my-new-feature)Commit your changes (git commit -am 'Added some feature')Push to the branch (git push origin my-new-feature)Create new Pull Request
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