ethereum/web3.py
Web3.py
Web3.py is a Python library that provides a comprehensive interface for interacting with the Ethereum blockchain. It functions as a JSON-RPC client, allowing applications to connect to blockchain nodes via HTTP, WebSocket, or IPC to read network state and send transactions.
The library includes a dedicated smart contract interface that uses Application Binary Interface definitions to deploy contracts and execute on-chain functions. It also features a cryptography toolkit for signing transactions and hashing data with Keccak, alongside utilities for translating Ethereum Name Service domain names into blockchain addresses.
Broad capabilities cover transaction management and blockchain data retrieval, including the ability to fetch block headers, filter event logs, and convert currency units. The system supports network management through request interception middleware, RPC call batching, and persistent connection monitoring for real-time events.
Features
- Blockchain Network Integrations - Provides a comprehensive Python interface for connecting to Ethereum nodes and interacting with the blockchain.
- Blockchain Network Interaction - Provides a comprehensive interface for reading network state and sending transactions to the Ethereum blockchain.
- Blockchain Data - Provides APIs for querying blockchain networks, retrieving account balances, and fetching transaction history.
- Blockchain Client Toolkits - Provides a comprehensive toolkit for managing transactions, hashing data with Keccak, and handling cryptographic keys.
- Blockchain Network Connections - Establishes connections to blockchain nodes via HTTP, WebSocket, or IPC.
- JSON-RPC Implementations - Functions as a JSON-RPC client for communicating with blockchain nodes via HTTP, WebSocket, or IPC.
- Protocol-Agnostic Transport Layers - Provides a unified API layer that abstracts communication across HTTP, WebSocket, and IPC transports.
- Blockchain Transaction Signing - Signs and broadcasts raw transactions to trigger state changes or transfer digital assets.
- Keccak-256 Hash Computations - Implements the Keccak-256 hash algorithm for generating contract selectors and verifying data integrity.
- Transaction Signing and Broadcasting - Enables the creation, signing, and broadcasting of raw transactions to the network using private keys.
- Decentralized Application Development - Provides the backend logic for building decentralized applications, including wallet management and transaction signing.
- Ethereum Client Libraries - Serves as a primary Python client library for interacting with Ethereum nodes and managing dApp state.
- Smart Contract Callers - Deploys smart contracts and executes functions using ABIs to handle state overrides and gas estimation.
- Encoding and Decoding Routines - Implements ABI encoding and decoding to translate blockchain data into Python types.
- Contract Interface Toolkits - Provides tools for managing ABIs and interacting with smart contracts to read or modify on-chain state.
- ABI Element Parsers - Parses function and event attributes to verify argument encoding and retrieve unique selectors.
- Remote Block Fetching - Fetches historical block headers and specific transaction details from remote blockchain nodes.
- Blockchain Unit Converters - Translates numeric values between the smallest atomic blockchain units and human-readable currency denominations.
- Blockchain Transaction Orchestration - Manages the transaction lifecycle including gas estimation and batching for modern Ethereum transaction types.
- Blockchain Address Resolvers - Translates human-readable domain names into their corresponding hexadecimal blockchain addresses.
- Websocket Connection Managers - Maintains persistent WebSocket and IPC connections for real-time blockchain event monitoring.
- Decentralized Naming Resolvers - Implements resolution of human-readable ENS domains into blockchain addresses.
- ENS Domain Resolutions - Resolves Ethereum Name Service domain names into blockchain addresses and associated metadata.
- Batch Request Handlers - Groups multiple JSON-RPC calls into a single request to reduce network overhead.
- Address Checksum Validators - Provides logic for verifying Ethereum address integrity using mixed-case checksums.
- Data Type Conversions - Transforms values between raw bytes, hexadecimal strings, and Python integers for EVM compatibility.
- Typed Data Signatures - Provides support for creating cryptographic signatures for structured data following standardized formatting rules.
- Blockchain Address Validation - Verifies if strings are valid blockchain addresses and confirms they follow checksum formatting.
- Request Interception Middleware - Provides a stack of configurable middleware layers to intercept and modify network requests and responses.
- Deployed Contract Monitoring - Tracks real-time behavior and events emitted by deployed smart contracts.
- Blockchain Event Monitors - Tracks real-time smart contract events and block updates via WebSocket subscriptions.
- Blockchain Event Logs - Implements filtering of blockchain event logs using topics and non-indexed arguments.
- Blockchain Event Subscriptions - Maintains long-lived connections to receive real-time notifications for blockchain logs and new blocks.
- Backend Ethereum Libraries - Python library for interacting with the Ethereum blockchain.
- Blockchain SDKs - Python library for interacting with Ethereum nodes.
Star history
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