| from datetime import datetime, timedelta | |
| from substrateinterface import SubstrateInterface | |
| from substrateinterface.extensions import SubstrateNodeExtension | |
| import logging | |
| logging.basicConfig(level=logging.DEBUG) | |
| substrate = SubstrateInterface(url="wss://rpc.polkadot.io") | |
| substrate.register_extension(SubstrateNodeExtension(max_block_range=100)) | |
| # Search for block number corresponding a specific datetime | |
| block_datetime = datetime(2022, 1, 1, 0, 0, 0) | |
| block_number = substrate.extensions.search_block_number(block_datetime=block_datetime) | |
| print(f'Block number for {block_datetime}: #{block_number}') | |
| # account_info = substrate.runtime. | |
| # exit() | |
| # Returns all `Balances.Transfer` events from the last 30 blocks | |
| events = substrate.extensions.filter_events(pallet_name="Balances", event_name="Transfer", block_start=-30) | |
| print(events) | |
| # All Timestamp extrinsics in block range #3 until #6 | |
| extrinsics = substrate.extensions.filter_extrinsics(pallet_name="Timestamp", block_start=3, block_end=6) | |
| print(extrinsics) | |