Learn Web3py - 10 Code Examples & CST Typing Practice Test
Web3.py is a Python library for interacting with the Ethereum blockchain. It allows developers to deploy, interact with, and query smart contracts, manage accounts, and handle blockchain transactions programmatically.
View all 10 Web3py code examples →
Learn WEB3PY with Real Code Examples
Updated Nov 25, 2025
Learning Path
Learn Python basics
Understand Ethereum accounts, gas, and transactions
Practice connecting to nodes via Web3.py
Interact with smart contracts
Automate backend workflows and DeFi scripts
Skill Improvement Plan
Week 1: Python and JSON-RPC basics
Week 2: Account management and sending ETH
Week 3: Contract interaction via ABI
Week 4: Event subscription and filters
Week 5: Build full Python backend integration
Interview Questions
What is Web3.py used for?
How do you send a transaction using Web3.py?
How do you interact with a deployed smart contract?
Difference between mainnet and testnet connections?
How do you listen to contract events?
Cheat Sheet
Web3 -> connection to Ethereum node
Account -> wallet object
Contract -> smart contract object via ABI
Transaction -> signed and sent to chain
Event -> logs filtered from contract
Books
Mastering Ethereum with Python
Building DeFi Bots with Web3.py
Python for Blockchain Developers
Automating NFT Workflows with Web3.py
Web3.py Cookbook
Tutorials
Getting started with Web3.py
Send ETH and ERC20 transactions
Interact with deployed smart contracts
Event listening and logging
Automate DeFi or NFT backend tasks
Official Docs
https://web3py.readthedocs.io/en/stable/
https://github.com/ethereum/web3.py
Community Links
Web3.py GitHub Discussions
Ethereum StackExchange
Reddit r/ethdev
Python Ethereum community Discord
YouTube Web3.py tutorials
Community Support
Web3.py GitHub
Ethereum StackExchange
Python Ethereum Community
Reddit r/ethdev
YouTube tutorials for Web3.py
Frequently Asked Questions about Web3py
What is Web3py?
Web3.py is a Python library for interacting with the Ethereum blockchain. It allows developers to deploy, interact with, and query smart contracts, manage accounts, and handle blockchain transactions programmatically.
What are the primary use cases for Web3py?
Deploying and interacting with smart contracts. Reading blockchain data and logs. Automating DeFi and trading operations. NFT minting and marketplaces. Backend blockchain integrations in Python
What are the strengths of Web3py?
Pythonic syntax easy for Python developers. Supports multiple Ethereum node connections. Flexible event and contract interaction. Easy to integrate with Python data pipelines. Strong community support and tutorials
What are the limitations of Web3py?
Limited to Ethereum and EVM-compatible chains. Performance bound by Python execution and node RPC. Not suitable for high-frequency on-chain computation. No native GUI; backend-focused. Dependent on node availability and sync status
How can I practice Web3py typing speed?
CodeSpeedTest offers 10+ real Web3py code examples for typing practice. You can measure your WPM, track accuracy, and improve your coding speed with guided exercises.