cryptofeed | Cryptocurrency Exchange Websocket Data Feed Handler | Cryptocurrency library
kandi X-RAY | cryptofeed Summary
kandi X-RAY | cryptofeed Summary
Cryptocurrency Exchange Websocket Data Feed Handler
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Top functions reviewed by kandi - BETA
- Handle a single book
- Handle a book
- Raise an exception if the bid asks overlap
- Get list of candles
- Normalize timestamp
- Convert a symbol to exchange symbol
- Normalize start and end times
- Handle incoming messages
- Create a ledger snapshot
- Return the address of the feed
- Example feed handler
- Handle an L2 message
- Get a list of candles
- Handle RPC messages
- Subscribe to the channel
- Subscribe to channels
- Get ledger details
- Parse market data
- Subscribe to channel
- Handle incoming message
- Get trades history
- List all trades for a given symbol
- Retrieve trades for a symbol
- Retrieve trades for a given symbol
- Get all trades for a symbol
- Parse the result of a symbol
cryptofeed Key Features
cryptofeed Examples and Code Snippets
Lines of Code : 28
License : No License
Copycoinbase:
- BTC-USD
- LTC-USD
kraken:
- BTC-USD
- LTC-USD
start_config_ui.bat
q.exe q/load.q -p 5002
q)tables[]
`quotes`refdata`trades
q)\f
`getCandlestick`getLastTrade`getSymList`jjoin`out`syncmd
python -m bin.cryptoq --q-port 5 f = FeedHandler()
f.add_feed(Gateio(channels=[TRADES], symbols=list_tmp, callbacks={ TRADES: TradePostgresGateio(**postgres_cfg)}))
f.run()
f = FeedHandler()
f.add_feed(Gateio(channels=[TRADES], symbols=list_tmp, cdef create_loop(func):
loop = asyncio.new_event_loop()
asyncio.set_event_loop(loop)
loop.run_until_complete(func())
if __name__ == "__main__":
thread = threading.Thread(target=create_loop, args=(func,))
thread.start()
import asyncio
import threading
from cryptofeed import FeedHandler
from cryptofeed.defines import BID, ASK, L2_BOOK
from cryptofeed.exchanges import Kraken
async def bookfunc(**kwargs):
print('bookfunc', kwargs)
def run_feed_hpkgDir
├── pkgName
├── pkgName.egg-info
└── tests
Community Discussions
Trending Discussions on cryptofeed
QUESTION
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 13:13Your 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:
QUESTION
I'm trying to use crypto feed to download data concurrently.
...ANSWER
Answered 2021-Sep-24 at 04:49In the single-threaded version of your code, all three of these statements execute in the same thread in a simple sequential fashion:
QUESTION
The cryptofeed is a python library that uses asyncio library to get real-time prices of different Crypto Exchanges. In this short program, we try to run the cryptofeed FeedHandler in an independent thread. An example of the code is shown below:
...ANSWER
Answered 2021-Jul-18 at 21:44You have to manually set an event loop for your thread through asyncio. You can do it by wrapping your function in a sort of loop setter:
QUESTION
In Visual Studio 2019, I'm trying to get intellisense to work with a package I installed using the command:
pip install -e "git+https://github.com/bmoscon/cryptofeed.git/#egg=cryptofeed"[all]
Here are the docs explaining what it does. I called it using my projects virtual environment and everything seemed to work out okay (i.e. all the files seemed to download and link correctly).
The problem I am having is the main package itself (cryptofeed) isn't being picked up by intellisense (it says, "unresolved import cryptofeed"), while all the other dependency packages that were installed with it are recognized fine.
After doing some reading and some tests, I'm very confident that the reason it isn't working has to do with how packages are installed "development mode". Inside my ./env/Lib/site-packages folder, I can see that cryptofeed is an .egg-link file (more info on that here). Does Visual Studio handle these files (or just the whole "editable/development mode" thing in general) for intellisense? Is there something I am misunderstanding or did wrong here?
I guess it's worth mentioning also that I read these MS' docs which made me think maybe I could do a "hacky" solution by just adding a search path to the source code, but that didn't appear to solve or do anything.
...ANSWER
Answered 2020-Oct-25 at 18:20I've finally got it working. I've tried it on multiple repos/packages and it worked on all of them.
The solution involves adding a search path manually (as mentioned above in my question post). I don't know exactly why, but it seems the added search path must target root directory of the python package. It wouldn't work If I just added the directory containing the source code.
i.e. If the installed package's source directory contains sub-directories like:
QUESTION
I'm trying to make a container with 4 buttons in it and I wan't to toggle them between each other. Currently toggle is works when I double click the button (1click - show, 2click -hide) But when I click another button with toggle option the button shows information about another one.
How i can make button toggle when i click another button but not the same one.
...ANSWER
Answered 2020-May-13 at 09:55A kind of simple toggling you can use on other elements, too:
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