Web3.py – How to Use Python3 Script to Call an ABI Function (Withdraw Funds) of a Smart Contract (dYdX)

Smart Contract

pragma solidity 0.5.1;


contract Uniswap {

   event Triggered(address indexed user);

   function addLiquidity() external {
       emit Triggered(msg.sender);
   }

}

Javascript Event Filtering

var sha3HashOfTheEvent = web3.sha3("event Triggered(address)");
var filterOptions = {
    fromBlock: 0,
    toBlock: 'latest',
    topics:[sha3HashOfTheEvent]
}
filter.watch(function(error, result){
    if(!error){
       console.log("The event has been triggered.......")
       filter.stopWatching();
    }
});

Hope it will help you.

Here is an example using Brownie that should help:

import time
from brownie import Contract, network, web3


abi = {}          # contract ABI as a dict
address = "0x00"  # contract address as a string


network.connect('mainnet')
my_contract = Contract("MyContractName", address, abi=abi)

height = web3.eth.blockNumber

while True:
    result = my_contract.myCallableFn(arg1, arg2) # change to call the desired method
    if result == desired_result:
        # do whatever you need to do

    while web3.eth.blockNumber == height:
        time.sleep(1)
    height = web3.eth.blockNumber

You will have to modify some configuration settings to point at your own node, or set an infura API key in your environment variables.

The documentation on accessing contract methods might also be useful if my example is unclear.

Hope this helps.