去中心化交易所(Decentralized Exchange,简称DEX)是一种允许用户在不依赖中心化交易所(如Coinbase、Binance等)的情况下进行加密货币交易的平台。以下是使用Python和web3.py库构建一个简单的去中心化交易所的示例代码。
This article is only for system development requirements reference
有系统开发需求可以+kaifa873
from web3 import Web3
class DecentralizedExchange:
def init(self, web3: Web3):
self.web3 = web3
def create_order(self, maker_address: str, taker_address: str, maker_token: str, taker_token: str, amount: float, price: float):
maker_token_contract = self.web3.eth.contract(address=maker_token, abi=self.web3.eth.contract(maker_token).abi)
taker_token_contract = self.web3.eth.contract(address=taker_token, abi=self.web3.eth.contract(taker_token).abi)
maker_token_decimals = maker_token_contract.functions.decimals().call()
taker_token_decimals = taker_token_contract.functions.decimals().call()
# Convert the amounts to the correct decimals
amount = self.web3.fromWei(amount, 'ether') * (10 ** maker_token_decimals)
price = self.web3.fromWei(price, 'ether') * (10 ** maker_token_decimals) / (10 ** taker_token_decimals)
# Create the order
order_txn = {
'from': maker_address,
'to': self.web3.eth.contract(address=self.web3.eth.contract(maker_token).address).address,
'value': self.web3.toWei(0, 'ether'),
'gas': self.web3.eth.estimate_gas({
'from': maker_address,
'to': self.web3.eth.contract(address=self.web3.eth.contract(maker_token).address).address,
'value': self.web3.toWei(0, 'ether')
}),
'data': self.web3.eth.contract(address=self.web3.eth.contract(maker_token).address).encodeABI(
function='createOrder',
args=[
taker_address,
amount,
price
]
)
}