Automating Smart Contract Interactions with Python and Web3.py

#crypto #python #opensource #web3

Why Python for Web3?

Python has become the go-to language for blockchain automation, thanks to its simplicity and the robust Web3.py library. Here's how to build a script that monitors Ethereum transactions and reacts to on-chain events in real time.

Getting Started

pip install web3 requests

Connecting to Ethereum

from web3 import Web3

w3 = Web3(Web3.HTTPProvider('https://mainnet.infura.io/v3/YOUR_KEY'))

if w3.is_connected():
    print(f'Connected! Block: {w3.eth.block_number}')

Monitoring Transactions in Real Time

The real power comes from event listeners. Watch for specific contract interactions and trigger downstream actions:

def handle_event(event):
    print(f'Event detected: {event}')

contract = w3.eth.contract(address=ADDRESS, abi=ABI)
event_filter = contract.events.Transfer.create_filter(fromBlock='latest')

while True:
    for event in event_filter.get_new_entries():
        handle_event(event)
    time.sleep(10)

Open Source & Community

All my projects are open source — check them out at github.com/Byaigo. Contributions and feedback are always welcome!

Support

If you find this useful, consider supporting:

ETH: 0x18da907cb9d981bc798acb87ac27b03a2dc3cbb7

Stay tuned for more Python + Web3 content. Happy building! 🚀

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