datafeed | A Datafeed System for Financial Data | Data Manipulation library

by yinhm Python Version: Current License: Apache-2.0

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | datafeed Summary

datafeed is a Python library typically used in Utilities, Data Manipulation, Pandas applications. datafeed has no bugs, it has no vulnerabilities, it has build file available, it has a Permissive License and it has high support. You can download it from GitHub.

more than a year. Datafeed is licensed under the Apache Licence, Version 2.0 (

Support

Quality

Security

License

Reuse

Support

datafeed has a highly active ecosystem.

It has 131 star(s) with 50 fork(s). There are 32 watchers for this library.

It had no major release in the last 6 months.

There are 6 open issues and 4 have been closed. On average issues are closed in 16 days. There are no pull requests.

It has a positive sentiment in the developer community.

The latest version of datafeed is current.

Quality

datafeed has 0 bugs and 0 code smells.

Security

datafeed has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

datafeed code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

datafeed is licensed under the Apache-2.0 License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

datafeed releases are not available. You will need to build from source code and install.

Build file is available. You can build the component from source.

Installation instructions are not available. Examples and code snippets are available.

datafeed saves you 1948 person hours of effort in developing the same functionality from scratch.

It has 4290 lines of code, 515 functions and 41 files.

It has medium code complexity. Code complexity directly impacts maintainability of the code.

Top functions reviewed by kandi - BETA

kandi has reviewed datafeed and discovered the below as its top functions. This is intended to give you an instant insight into datafeed implemented functionality, and help decide if they suit your requirements.

Get a single hour minute
Return a new time
Set the current break time
Change the time of the market
Archives daily data
Update the contents of an iterable
Get a day
Get 1 minute data
Get 5 minute data
Start scheduled jobs
Return True if we need to be archived
Checks to see if the last day is scheduled for the month
Get the dividend value
Handle incoming requests
Handle the request
Handle a request
Memoize argument head
Make urls
Get a specific sector by name
Run the task
Make a list of urls
Fetch url objects
Parse a string
Fetch urls
Parse Google report
Deprecated

Get all kandi verified functions for this library.

datafeed Key Features

No Key Features are available at this moment for datafeed.

datafeed Examples and Code Snippets

No Code Snippets are available at this moment for datafeed.

Community Discussions

Trending Discussions on datafeed

How to force close ProcessPoolExecutor even when there is deadlock

Java String formatting for a REST API url

Deleting a file that doesn't exist on S3 deletes the folder if that is the last file. How do we prevent this?

Unable to update new data in Listview Flutter

Goroutine safe channel close doesn't actually close webscoket

How to use SMA signal from one symbol to trade another symbol

getting 'SeriesGroupBy' object has no attribute 'high' in pandas resample of crypto data

Cannot Get Full HTML When Scraping Data from Site with Beautiful Soup

Pandas: import multiple dataframes, change headers and append them in loop

Structr - Unable to connect to Neo4j

QUESTION

How to force close ProcessPoolExecutor even when there is deadlock

Asked 2022-Apr-01 at 13:13

I'm trying to use a separate process to stream data by concurrent futures. However, on the otherside, sometimes the other party stops the datafeed. But as long as I restart this threadable then it would work again. So I design something like this, to be able to keep streaming data without intervention.

...

ANSWER

Answered 2022-Apr-01 at 13:13

Your code seems to suggest that it is okay to have two instances of threadable running concurrently, at least for some overlap period and that you unconditionally want to run a a new instance of threadable after 3600 seconds has expired. That's all I can go on and based on that my only suggestion is that you might consider switching to using the multiprocessing.pool.Pool class as the multiprocessing pool, which has the advantage of (1) it is a different class than what you have been using as for no other reason is likely to produce a different result and (2) unlike the ProcessPoolExecutor.shutdown method, the Pool.terminate method will actually terminate running jobs immediately (the ProcessPoolExecutor.shutdown method will wait for jobs that have already started, i.e. pending futures, to complete even if you had specified shutdown(wait=False), which you had not).

The equivalent code that utilizes multiprocessing.pool.Pool would be:

Source https://stackoverflow.com/questions/71566336

QUESTION

Java String formatting for a REST API url

Asked 2022-Jan-18 at 09:12

I am trying to format a URL in Java using String.format. The API takes the parameters of the following form:

...

ANSWER

Answered 2022-Jan-18 at 09:12

You need to escape the % symbol for the URL characters that are not part of the string formatting. You escape it by duplicating it %%. So try with this pattern instead:

Source https://stackoverflow.com/questions/70752210

QUESTION

Deleting a file that doesn't exist on S3 deletes the folder if that is the last file. How do we prevent this?

Asked 2021-Oct-19 at 21:48

So, I have the following structure on S3:

mainbucket

DataFeeds/
Statement/

We had incidents where the DataFeeds/ folder was being deleted! So, I tested with following:

...

ANSWER

Answered 2021-Oct-19 at 20:25

Folders do not exist in Amazon S3. It is a 'flat' storage service where the Key (filename) of an object includes the full path, including directories.

Amazon S3 will 'simulate' folders for you. For example, if you upload a file to invoices/january.txt, then the invoices directory will 'magically' appear. If you then delete that object, the directory will then 'disappear'. This is because it never actually existed.

If you use the Create folder button in the S3 management console, it will create a zero-length object with the same name as the directory. This will 'force' the directory to appear in the bucket listing. Deleting the zero-length object will cause the directory to disappear if there are no objects with that same Prefix (path).

The best advice for using S3 is to pretend that folders exist. You can place an object in any path and the (pretend) directories will magically appear. Do not worry about directories disappearing, since they never actually existed!

If you really need empty directories to stay around, use that Create folder button to create the zero-length object. It will stay around until you delete the zero-length object.

Source https://stackoverflow.com/questions/69636571

QUESTION

Unable to update new data in Listview Flutter

Asked 2021-Oct-11 at 18:15

Hey guys I am new to flutter, I have been trying to build a mock app that shows a feed it works fine using the mock data, but when I try to add new input data it gets added but doesn't get updated, please help me, I totally understand that my mistake can be super trivial and foolish but I have been stuck for weeks, here is the code. This is the screen where everything is displayed

...

ANSWER

Answered 2021-Oct-11 at 18:15

Firstly, wrap Scaffold with ChangeNotifierProvider and change your floating action button onPressed function like this:

Source https://stackoverflow.com/questions/69528483

QUESTION

Goroutine safe channel close doesn't actually close webscoket

Asked 2021-Sep-02 at 18:36

This one is a tricky issue that bugs me quite a bit.

Essentially, I wrote an integration microservice that provides data streams from Binance crypto exchange using the Go client. A client sends a start messages, starts data stream for a symbol, and at some point, sends a close message to stop the stream. My implementation looks basically like this:

...

ANSWER

Answered 2021-Aug-31 at 11:39

Firstly, this is dangerous:

Source https://stackoverflow.com/questions/68996755

QUESTION

How to use SMA signal from one symbol to trade another symbol

Asked 2021-May-25 at 12:51

My idea is to track crude oil commodity prices and trade an ETF based on the movements of Oil.

Logic is:

If price crosses SMA100 upwards trending for Oil, buy ETF
If price crosses SMA100 downwards trending for oil, sell ETF

I use a generic SMA strategy but I cannot make it use the data from oil. Based on the plot it uses SMA 100 for the ETF.

...

ANSWER

Answered 2021-May-25 at 12:51

I think I found something in the documentation to help me with this issue: https://www.backtrader.com/blog/posts/2015-09-03-multidata-strategy/multidata-strategy/

Source https://stackoverflow.com/questions/67678974

QUESTION

getting 'SeriesGroupBy' object has no attribute 'high' in pandas resample of crypto data

Asked 2021-May-17 at 18:15

So when loading kraken.com historical datafeed into pandas to convert from tick data (time and sales) to OHLC (Open,High,Low,Close) data I run into an issue where I am not able to resample for 'high' & 'low' as they throw errors, but 'first', 'last', and 'sum' work just fine, I don't know why or what the available options are as it seems there is an enumerated list of options (total guess there).

The code below takes heavy inspiration (out right copping blindly) from ryantjo's Resampling Market Tick Data.

...

ANSWER

Answered 2021-May-17 at 18:15

If you want to extract the highest value from each group you need to use max

Source https://stackoverflow.com/questions/67574952

QUESTION

Cannot Get Full HTML When Scraping Data from Site with Beautiful Soup

Asked 2021-May-15 at 06:36

I'm trying to scrape this site but I get a part of HTML. I wanted to get token's price

it should be contained inside

...

ANSWER

Answered 2021-Apr-25 at 08:39

Try this:

Source https://stackoverflow.com/questions/67247434

QUESTION

Pandas: import multiple dataframes, change headers and append them in loop

Asked 2021-May-05 at 16:27

I was analysing crypto data using a library called ccxt. With ccxt, I can easily get candlestick for crypto datafeed into dataframe:

...

ANSWER

Answered 2021-May-05 at 12:13

You can try retaining your code of aggregating a list of dataframes and then concat them after the loop, like below:

Source https://stackoverflow.com/questions/67398794

QUESTION

Structr - Unable to connect to Neo4j

Asked 2021-Apr-28 at 14:05

"Connection to the database terminated. This can happen due to network instabilities, or due to restarts of the database." But my Neo4j DB is online and can be reached - Also in the shown logs there is not indication that the connection is the issue...

Neo4j Version: 4.2.5 Edition: community

Structr Version: 3.6.4

What did I miss? (Changed the default neo4j password and can create nodes in the Neo4j Browser)

Have a look on the Logfile output here:

Thank you some hints would be awesome :-)

...

ANSWER

Answered 2021-Apr-28 at 14:05

Structr 3.6.4 is compatible with Neo4j 3.x.

Our current 4.0-SNAPSHOT builds support Neo4j 4.x.

As we are pretty close to a release of 4.0 and it contains many new features and fixes, I would recommend you use a SNAPSHOT version if you are not running on production yet.

Source https://stackoverflow.com/questions/67301304

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

Vulnerabilities

No vulnerabilities reported

Install datafeed

You can download it from GitHub.
You can use datafeed like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.