There are two main ways to interact with Ethereum using python:

1. web3 module connected to infura API
2. etherscan API

codes

The idea is basic, we refresh the transactions of a wallet every x seconds. Whenever there is a new transaction, we play a sound or alert. Let's use the etherscan API to fetch the transactions of an address:

import requests

API_KEY = "LOG IN TO etherscan.io/myapikey AND PUT TOKEN HERE"
def get_txns(address, block):
    etherscan_url = f'https://api.etherscan.io/api?module=account&action=txlist&address={address}&startblock={block}&sort=asc&apikey={API_KEY}'
    resp = requests.get(etherscan_url).json()['result']
    return resp

            

Now, `get_txns(address, block)` will get any 'Normal' transactions since block. Note you can change this URL endpoint to fetch internal or token transactions if you so desire. Now to set up an alert for new transactions, let's put it in a loop:

import time

while True:
    txns = get_txns("0x5b5b487aed7d18ac677c73859270b0f6cf5bb69c", 0)
    print(txns)
    time.sleep(1)

            

Here we are just checking out the transactions from some address "0x5b5b487aed7d18ac677c73859270b0f6cf5bb69c" since block 0, and display using pretty print so there isnt JSON spam everywhere (v useful).
Now we want to play an alert if there are no transactions since some block, ie `len(txns) == 0`. On UNIX can play an mp3 or sound (windows plebs) with something like:

def beep():
    # we play a file with a `mpg123` command, opening a subprocess, then closing it.
    cmd = "mpg123 ./alert.mp3"
    # we play the sound 3 times
    for i in range(3):
        p = subprocess.Popen(cmd, stdout=subprocess.PIPE, shell=True)
        time.sleep(2)
        p.kill()
    return

# WINDOWS
import winsound
def winbeep():
    winsound.Beep(2500, 100)
    return

            

Now we have:

while True:
    txns = get_txns("0x5b5b487aed7d18ac677c73859270b0f6cf5bb69c", 0)
    if len(txns) != 0:
        pprint(txns)
        beep()

    time.sleep(1)

            

That's it. Click here for full script.

usage: Watch ERC-20 send txs from an address and sound alarms [-h] -a ADDRESS [-b BLOCK]

optional arguments:
-h, --help            show this help message and exit
-a ADDRESS, --address ADDRESS
                Watch address
-b BLOCK, --block BLOCK
                Start block, send txs after this block height will sound the alarm.