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chainlink-feeds-0.2.9


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توضیحات

Python module to get price and other data from the decentralized chainlink community resources
ویژگی مقدار
سیستم عامل -
نام فایل chainlink-feeds-0.2.9
نام chainlink-feeds
نسخه کتابخانه 0.2.9
نگهدارنده []
ایمیل نگهدارنده []
نویسنده Patrick Collins
ایمیل نویسنده patrick@alphachain.io
آدرس صفحه اصلی https://github.com/alphachainio
آدرس اینترنتی https://pypi.org/project/chainlink-feeds/
مجوز MIT
# chainlink_feeds [![PyPI version](https://badge.fury.io/py/chainlink-feeds.svg)](https://badge.fury.io/py/chainlink-feeds.svg) [![Average time to resolve an issue](http://isitmaintained.com/badge/resolution/AlphaChainio/chainlink_feeds.svg)](http://isitmaintained.com/project/AlphaChainio/chainlink_feeds "Average time to resolve an issue") [![Percentage of issues still open](http://isitmaintained.com/badge/open/AlphaChainio/chainlink_feeds.svg)](http://isitmaintained.com/project/AlphaChainio/chainlink_feeds "Percentage of issues still open") [![Actions Status](https://github.com/AlphaChainio/chainlink_feeds/workflows/chainlink_feeds/badge.svg)](https://github.com/alphachainio/chainlink_feeds/actions?query=workflow%3Achainlink_feeds) A way to pull data from the Chainlink Price Feeds for analytics, algorithmic trading models, or else. This repo uses either an RPC_URL or the [Chainlink Subgraph](https://thegraph.com/explorer/subgraph/melonproject/chainlink) # Quickstart Install: ``` pip install chainlink_feeds ``` # Using the Chainlink subgraph When you don't specify an RPC_URL, you automatically use the Chainlink subgraph. ``` from chainlink_feeds.chainlink_feeds import ChainlinkFeeds cf = ChainlinkFeeds() print(cf.get_latest_round_data(pair='ETH_USD')) ``` Result: ``` [{'assetPair': 'ETH/USD', 'blockHash': '0x141ad3c7468f4263d8b1b98a73f804b40ef1eb3a966bc2151646a08ba9872a58', 'blockNumber': '10887253', 'id': '0xf79d6afbb6da890132f9d7c355e3015f15f3406f/10887253/8', 'price': '38281000000', 'timestamp': '1600446952', 'transactionHash': '0x44e321f415e2ae236e3fbfb0df024825ff95331dca89dd25401303f0433fdb9d'}] ``` ``` You can also pass: cf.get_historical_price() cf.get_price_feeds() cf.get_prices() cf.get_hourly_candle() cf.get_daily_candle() cf.get_weekly_candle() ``` This will get you all the data the subgraph can return. If you'd like to get pandas, you can just change the output format of the object. ``` cf = ChainlinkFeeds(output_format = 'pandas') data = cf.get_daily_candle(pair='eth/usd') data['closePrice'] = data['closePrice'].astype(float) data.index = pd.to_datetime(data.index, unit='s') data['closePrice'].plot() ``` resulting in: ``` assetPair averagePrice closePrice highPrice lowPrice medianPrice openPrice openTimestamp 1600387200 ETH/USD 38615230654 38281000000 39190413319 38110269640 38933749501 38933749501 1600300800 ETH/USD 37891000000 39020000000 39344406296 36503000000 36503000000 36503000000 1600214400 ETH/USD 36564000000 36555000000 37276742411 35743000000 36428000000 36428000000 1600128000 ETH/USD 36983000000 36385393883 38069814258 36319641931 37744000000 37744000000 1600041600 ETH/USD 36914207489 37675318623 38270000000 35817000000 36634540717 36634540717 ... ... ... ... ... ... ... ... 1586649600 ETH/USD 16022887240 15994875000 16467921975 15597479550 15864014512 15864014512 1586563200 ETH/USD 15838000000 15738831997 16108625000 15543870740 15813418305 15813418305 1586476800 ETH/USD 15868349654 15729441133 16995863008 15328500000 16994301012 16994301012 1586390400 ETH/USD 16990152130 17075750000 17151190079 16863999644 16943041228 16943041228 1586304000 ETH/USD 17277450182 17276241069 17277853301 17276241069 17277853301 17277853301 ``` You can then run some analytics on it: ``` from chainlink_feeds.chainlink_feeds import ChainlinkFeeds import matplotlib.pyplot as plt import pandas as pd cf = ChainlinkFeeds(output_format = 'pandas') data = cf.get_daily_candle(pair='eth/usd') data['closePrice'] = data['closePrice'].astype(float) data.index = pd.to_datetime(data.index, unit='s') data['closePrice'].plot() ``` Which results in: ![Crypto Data Chart](./images/chart.png) You can also run your own GraphQL Query with: ``` cf.graphql_query("{enter_query_here}") ``` You can check out some methods on the [Chainlink subgraph](https://thegraph.com/explorer/subgraph/melonproject/chainlink) site. ![Crypto Data Chart](./images/chainlink_subgraph.png) # Using the RPC_URL Otherwise you can specify an RPC_URL and query the blockchain yourself. ``` from chainlink_feeds.chainlink_feeds import ChainlinkFeeds cf = ChainlinkFeeds(rpc_url = "https://www.infura.com/asdfasdfasdfas) ``` And query the blockchain directly. You do need to know the address and the ABI of the pair. For reference, you can check the `config` folder in this repo. You can also `load_config` with your own config with addresses or ABIs. A lot of them are prepopulated in this repo, but be sure to check if you're using outdated addresses. ``` print(cf.get_latest_round_data(network='KOVAN', pair='ETH_USD')) ``` Resulting in: ``` {'round_id': 18446744073709562669, 'price': 382.66, 'started_at': '2020-09-18 13:30:12', 'time_stamp': '2020-09-18 13:30:12', 'answered_in_round': 18446744073709562669} ``` You can use the methods directly from the [Chainlink Price Feeds Documentation](https://docs.chain.link/docs/using-chainlink-reference-contracts). # TODOs: - Add more query support - Make docs other than this readme - add more tests - figure out how to go back more than 1000 results # Contact: - [Alpha Chain Site](https://alphachain.io) - [Medium](https://medium.com/@patrick.collins_58673) - [YouTube](https://www.youtube.com/channel/UCn-3f8tw_E1jZvhuHatROwA?feature=emb_ch_name_ex) - [Twitter](https://twitter.com/AlphaChainio) - [Discord](https://discord.gg/jj8wQ9b) Be sure to check out the [Chainlink Developers Discord](https://discord.gg/2YHSAey) as well! Consider starring this repo if you enjoyed it :)


نیازمندی

مقدار نام
- configparser
- pandas
- web3


نحوه نصب


نصب پکیج whl chainlink-feeds-0.2.9:

    pip install chainlink-feeds-0.2.9.whl


نصب پکیج tar.gz chainlink-feeds-0.2.9:

    pip install chainlink-feeds-0.2.9.tar.gz