ypricemagic 5.2.21

Use this tool to extract historical on-chain price data from an archive node. Shoutout to @bantg and @nymmrx for their awesome work on yearn-exporter that made this library possible.

ypricemagic

Use this tool to extract historical on-chain price data from an archive node.

ypricemagic is built to work seamlessly with both sync and async Python codebases using the ez-a-sync framework.

Requirements

• Python 3.9 or higher.
• At least 16GB of RAM.

Prerequisites

• First, you will need to bring your own archive node. This can be one you run yourself, or one from one of the common providers (Tenderly, Alchemy, QuickNode, etc.)
• You will also need an auth token for Etherscan's API. Follow their guide to get your key, and set env var ETHERSCAN_TOKEN with its value.

Installation

ypricemagic is published on PyPI. Simply install it just as you would any other library.

pip install ypricemagic

Network Configuration

ypricemagic utilizes the Brownie framework for Ethereum smart contract interactions. As such, it's essential that users configure a Brownie network to use their chosen RPC. Ensure you have access to an Ethereum node (e.g., through Infura or Alchemy) and add the provided API endpoint to your Brownie network configuration.

Refer to the Brownie documentation on network management for detailed guidance on setting up your networks. This setup is critical, as without it, ypricemagic will not be able to communicate with your RPC.

Usage

There are 2 main entrypoints to ypricemagic, y.get_price and y.get_prices.

from y import get_price
price = get_price(token,block)

# OR

from y import get_prices
prices = get_prices(tokens, block)

You can also use ypricemagic asynchronously:

price = await get_price(token, block, sync=False)

# OR

prices = await get_prices(tokens, block, sync=False)

See the docs for more usage information.

Debug logging

If you need to spot long-running async calls, enable the y.stuck? logger at DEBUG to get periodic "still executing" messages. Details: y.stuck? logger.

Extras

You can also import protocol specific modules. For example:

from ypricemagic import uniswap
uniswap.get_price(token, block)

from ypricemagic.compound import get_price
get_price(compoundToken, block)

These are not 'supported' per se and are subject to change at any time. But they can come in handy. The not-very-organized docs site will be your friend here.

Enjoy!

Shoutouts

Shoutout to Banteg (@bantg) and nymmrx (@nymmrx) for their awesome work on yearn-exporter that made this library possible.