Learn WEB3PY with Real Code Examples

Install Python 3.8+

Install Web3.py via pip (`pip install web3`)

Set up an Ethereum node (Infura, Alchemy, or local Geth/Hardhat node)

Verify connection using Web3 provider

Test sending a simple transaction

Install Python 3.8+

Set up virtual environment

Install Web3.py and dependencies

Connect to Ethereum node (Infura, Alchemy, or local)

Test sample script to query balance

config.py - provider URLs and private keys

requirements.txt - dependencies

scripts/ - Web3.py scripts

tests/ - unit/integration tests

.env - environment variables for secrets

README.md - documentation

python script.py - run Web3.py script

pip install web3 - install library

pytest - run tests

ganache-cli - local test node

solc - compile Solidity contracts

Documentation primarily in English

Supports Unicode for addresses and metadata

Community translations available

Used globally in blockchain projects

Compatible with multi-language Python apps

Accessible to Python developers

Clear documentation and tutorials

Community support for questions

Supports multiple OS platforms

Easy integration with scripts and apps

Not applicable in Python library itself

Can integrate with web frontends via Flask/Django

Serve dashboards or analytics

Render event data or transaction history

Python handles backend logic only

Blockchain state managed via contract functions

Read-only state via eth.call

Write operations via signed transactions

Event subscriptions for state changes

No on-chain state stored in Python itself

Contract storage accessed via Web3.py calls

Local caching optional for performance

Serialized data using JSON or web3 encoding

Historical logs via filters

Transactions tracked for confirmation