send-raw-transaction.py

from web3 import Web3 # Use version 5.29.2
from web3.middleware import geth_poa_middleware
import json

class CONST:
    def ABI():
        with open("./WrappedEther.json") as f:
            return json.load(f)
    NodeProvider = lambda : "https://"
    WrappedEther = lambda : ""
    PubKey       = lambda : ""
    PriKey       = lambda : ""
    Amount       = lambda : 10000
    ChainId      = lambda : 4 # At Rinkeby

if __name__ == "__main__":
    # Connect provider
    w3 = Web3(Web3.HTTPProvider(CONST.NodeProvider()))
    w3.middleware_onion.inject(geth_poa_middleware, layer=0) # Could disable this line for Mainnet
    
    # Prepare helper objects
    contract = w3.eth.contract(address=CONST.WrappedEther(), abi=CONST.ABI())
    nonce    = w3.eth.get_transaction_count(CONST.PubKey())
    
    # Prepare unsigned txn
    unsigned_txn = contract.functions.approve(
        CONST.PubKey(),
        CONST.Amount()
    ).buildTransaction({
        "chainId": CONST.ChainId(),
        "gas": 10000000,
        "maxFeePerGas": w3.toWei("100", "gwei"),
        "maxPriorityFeePerGas": w3.toWei("10", "gwei"),
        "nonce": nonce
    })
    
    # Sign the txn
    signed_txn = w3.eth.account.sign_transaction(unsigned_txn, private_key=CONST.PriKey())
    
    # Send signed txn
    txn_hash = w3.eth.send_raw_transaction(signed_txn.rawTransaction)
    txn_hash = w3.toHex(txn_hash)
    print(txn_hash)

https://rinkeby.etherscan.io/tx/0x9fd0335ecb2875357d10bea9f70ebc808f1dcc6b9b576ebccb9045e69007be4c