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Here is an article about using Durable Nounce for Python limit orders:

Durable Nounce and Binding in Python Wallets: A Beginner’s Guide

As a developer working with blockchain platforms, you may have come across concepts like durable notice and wallet binding. In this article, we will explore how to use the Durable Nounce library in Python and demonstrate its application in creating limit orders.

What is Durable Nounce?

Durable noun is an open-source JavaScript library that enables smart contracts on blockchain platforms such as Solana, Ethereum, and Binance Smart Chain. It allows developers to build decentralized applications (dApps) without having to worry about the complexity of writing in Solidity or other programming languages.

Connecting Wallets Using Python

To use Durable Nounce in Python, you will need to connect your wallet to your blockchain platform. Here is an example of using Solana and the solana-program library:

import os
from solana_program import account_key, program_account_info
def main():





Generate your Solana wallet key pair
key = account_key.generate_keypair()
program_id = "your_solana_program_id"
pub_key = program_account_info.get_pubkey(program_id)

Create a durable announcement contract instance
contract_instance = durable_nounce.create_contract(
program_account_info,
key.public_key,
pub_key,
"durable_nounce",
"your_durable_nounce_program_id",
{
"accounts": ["public_key"],
"parameters": {"nouncePubkey": "public_key"},
},
)
if __name__ == "__main__":
main ()

In this example, we generate a Solana wallet key pair and create a long-term contract instance using the create_contract method. We then specify the public key that will be used as the contract sender account.

Creating a Limit Order

Now that you have a durable noun contract instance, let’s create a limit order instance:

import os
from solana_program import program_account_info
def main():

Generate your Solana wallet key pair
key = account_key.generate_keypair()
program_id = "your_solana_program_id"
pub_key = program_account_info.get_pubkey(program_id)

Create a durable noun contract instance
contract_instance = durable_nounce.create_contract(
program_account_info,
key.public_key,
pub_key,
"durable_nounce",
"your_durable_nounce_program_id",
{
"accounts": ["public_key"],
"parameters": {"nouncePubkey": "public_key"},
},
)

Create a limit order
program_account_info = durable_nounce.create_program_account_info(
key.public_key,
pub_key,
"limit_order",
10,000, 
maximum selling amount in Solana units
{
"accounts": ["nouncePubkey"],
"parameters": {"buyPrice": "123.45", "amount": "10000"},
},
)

Send a limit order to the contract instance using the connection wallet
durable_nounce.send_contract_account_info(
contract_instance,
program_account_info,
)

In this example, we create a durable contract instance and send it a limit order using the “send_contract_account_info” method. A limit order specifies the maximum amount of Solana units to be sold at the current price.

Example Use Cases

Durable Nounce can be used for a variety of purposes, including:

• Building decentralized exchanges (DEXs) with automated market making

• Creating trustless pools of liquidity on blockchain platforms

• Enabling smart contract-based trading and margining

Please note that this is just a basic example to get you started.

Currency Transaction Long