Cost aware rebalancing - prerequisites about rain HOT 1 CLOSED

import grpc
from lnd import lnrpc_pb2, lnrpc_pb2_grpc

def pay_invoice_with_invalid_hash(invoice: str, lnd_grpc_address: str, macaroon_path: str):
    # Create a gRPC channel to the LND node
    with open(macaroon_path, 'rb') as f:
        macaroon_bytes = f.read()
    macaroon = macaroon_bytes.hex()
    creds = grpc.ssl_channel_credentials()
    channel = grpc.secure_channel(lnd_grpc_address, creds)
    stub = lnrpc_pb2_grpc.LightningStub(channel)

    # Create a request to pay the invoice
    request = lnrpc_pb2.SendRequest(payment_request=invoice)

    # Add an invalid payment hash to the request
    request.payment_hash = b'\x01' * 32

    # Send the request to pay the invoice
    try:
        response = stub.SendPaymentSync(request)
    except grpc.RpcError as e:
        if e.code() == grpc.StatusCode.INVALID_ARGUMENT:
            print('Payment failed: Invalid payment hash')
            return None
        else:
            raise e

    # Return the path of hops used if the payment succeeded
    return response.route.hops