Blockchain is a distributed ledger that is open to all.It uses blockchain data structure to verify and store data,and uses cryptography to ensure the security of data transmission and access.It has the characteristics of decentralization,tamper-proof,transparency and openness.

　　from pyuniswap import pyuniswap

　　#所需交易的bas代幣的合約地址

　　bas_address='0xa7ed29b253d8b4e3109ce07c80fc570f81b63696'

　　#在infura上申請一個節(jié)點地址當(dāng)作provider

　　my_provider='https://mainnet.infura.io/v3/'

　　#實例化一個代表bas代幣的對象

　　bas=Token(prq_address,my_provider)開發(fā)需求及邏輯I35源碼7O98開發(fā)O7I8

　　#連接錢包

　　bas.connect_wallet('waller_address','private_key')

　　#檢查是否連接成功

　　bas.is_connected()

　　#錢包中該代幣的余額

　　balance=bas.balance()

　　#錢包中該代幣的價值（默認(rèn)以eth作為計量單位）

　　bas.price(balance)

　　#1個eth能換多少該代幣

　　bas.received_amount_by_swap(int(1e18)))

　　#買1eth的該代幣

　　bas.buy(int(1e18),slippage=0.05)

　　contract UniswapV2Pair is IUniswapV2Pair,UniswapV2ERC20{

　　using SafeMath for uint;

　　using UQ112x112 for uint224;

　　//最低流動性開發(fā)詳細(xì)：MrsFu123

　　uint public constant MINIMUM_LIQUIDITY=10**3;

　　//獲取transfer方法的bytecode前四個字節(jié)

　　bytes4 private constant SELECTOR=bytes4(keccak256(bytes('transfer(address,uint256)')));

　　address public factory;

　　address public token0;

　　address public token1;

　　For example,the data collection of the Internet of Things,5G transmission,big data processing,the use of artificial intelligence and the guarantee of blockchain,each technology only completes a part of the life cycle of data elements,and needs larger and more focused concepts,scenarios and business models to drive the further integration of the new generation of information technology,so as to build the infrastructure oriented to the digital ecosystem to support the complex application logic of the metauniverse Business innovation and business model.