How to write transaction on Infuria with data

Web 3 Python - Transaction

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# How to write transaction on Infuria with data  by Giorgio Alessandro Motta
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# Import
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from web3 import Web3
import json
import calendar
import time

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# Contract Abi loading
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w3 = Web3(Web3.HTTPProvider("https://ropsten.infura.io/YOUR INFURIA KEY"))
with open("C:/Users/XXXX/YOUR CONTRACTe.json") as f: #loaad you contract
    info_json = json.load(f)
abi = info_json["abi"]
address = 'YOUR CONTRACT' #address of the contract
contract = w3.eth.contract(address=address, abi=abi)
account = 'PUBLIC KEY ACCOUNT'#account from which you want to do the transaction

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# information of the transaction
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nonce = w3.eth.getTransactionCount('ACCOUNT PUBLIC ADDRESS', 'latest')
private_key = 'INSERT ACCOUNT PRIVATE KEY'

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# Build Transaction
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ts = w3.toInt(calendar.timegm(time.gmtime())) #get the timestamp
tx = contract.functions.registerHarvest(100, ts).buildTransaction(
    {'nonce': nonce,
     'gasPrice': w3.eth.gasPrice,
     'gas': 2100000})
signed_txn = w3.eth.account.signTransaction(tx, private_key) #sign the transction

# get the hash
hash_transaction = w3.eth.sendRawTransaction(signed_txn.rawTransaction)
print(w3.toHex(hash_transaction)) #get the transaction hash