get_almost_latest_block_number

Documentation for eth_defi.provider.broken_provider.get_almost_latest_block_number function.

get_almost_latest_block_number(web3)[source]

Get the latest block number with workarounds for low quality JSON-RPC service providers.

Use this method instead of web3.eth.block_number.

Because low quality providers may lose the block of this block number on the subsequent API calls, we add some number of delay or confirmations to the chain tip, specified by :py:funct:`get_block_tip_latency`.

Providers with known issues

LlamaNodes
Ankr

Example:

from eth_defi.provider.broken_provider import get_almost_latest_block_number

# We cannot query the chain head on Ankr or LlamaNodes,
# so get the almost head
if not block_number:
    block_number = get_almost_latest_block_number(web3)

timestamp = fetch_block_timestamp(web3, block_number)

token = fetch_erc20_details(web3, asset.address)
amount = token.fetch_balance_of(address, block_identifier=block_number)

Parameters: web3 (web3.main.Web3) –
Return type: int