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代币的合约地址
bas_address='0xa7ed29b253d8b4e3109ce07c80fc570f81b63696'
#在infura上申请一个节点地址当作provider
my_provider='https://mainnet.infura.io/v3/'
#实例化一个代表bas代币的对象
bas=Token(prq_address,my_provider)
#连接钱包
bas.connect_wallet('waller_address','private_key')
#检查是否连接成功
bas.is_connected()
#钱包中该代币的余额
balance=bas.balance()
#钱包中该代币的价值（默认以eth作为计量单位）
bas.price(balance)
#1个eth能换多少该代币
bas.received_amount_by_swap(int(1e18)))
#买1eth的该代币
bas.buy(int(1e18),slippage=0.05)
contract UniswapV2Pair is IUniswapV2Pair,UniswapV2ERC20{
using SafeMath for uint;
using UQ112x112 for uint224;
//
uint public constant MINIMUM_LIQUIDITY=10**3;
//获取transfer方法的bytecode前四个字节
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.
