py-substrate-interface extension to utilize Subsquid indexes
Project description
Python Substrate Interface: Subsquid Extension
Description
This extension enables Substrate Interface to use Giant Squid indexes provided by Subsquid
Installation
pip install substrate-interface-subsquid
Initialization
from substrateinterface import SubstrateInterface
from substrateinterface_subsquid.extensions import SubsquidExtension
substrate = SubstrateInterface(url="wss://rpc.polkadot.io")
substrate.register_extension(SubsquidExtension(url='https://squid.subsquid.io/gs-explorer-polkadot/graphql'))
Usage
Filter events
events = substrate.extensions.filter_events(
pallet_name="Balances", event_name="Transfer", account_id="12L9MSmxHY8YvtZKpA7Vpvac2pwf4wrT3gd2Tx78sCctoXSE",
page_size=25
)
Filter extrinsics
extrinsics = substrate.extensions.filter_extrinsics(
ss58_address="12L9MSmxHY8YvtZKpA7Vpvac2pwf4wrT3gd2Tx78sCctoXSE",
pallet_name="Balances", call_name="transfer_keep_alive", page_size=25
)
Search block number
block_datetime = datetime(2020, 7, 12, 0, 0, 0, tzinfo=timezone.utc)
block_number = substrate.extensions.search_block_number(block_datetime=block_datetime)
License
https://github.com/polkascan/py-substrate-interface-extension-subsquid/blob/master/LICENSE
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