chain

Documentation for eth_defi.chain Python module.

Chain specific configuration.

Many chains like Polygon and BNB Chain may need their own Web3 connection tuning. In this module, we have helpers.

Module Attributes

POA_MIDDLEWARE_NEEDED_CHAIN_IDS

List of chain ids that need to have proof-of-authority middleweare installed

Functions

fetch_block_timestamp(web3, block_number)	Get the block mined at timestamp.
get_graphql_url(provider)	Resolve potential GraphQL endpoint API for a JSON-RPC provider.
has_graphql_support(provider)	Check if a node has GoEthereum GraphQL API turned on.
install_api_call_counter_middleware(web3)	Install API call counter middleware.
install_api_call_counter_middleware_on_provider(...)	Install API call counter middleware on a specific API provider.
install_chain_middleware(web3[, poa_middleware])	Install any chain-specific middleware to Web3 instance.
install_retry_middleware(web3)	Install gracefully HTTP request retry middleware.