Python量化合約系統開發技術，合約量化原始碼系統開發技術方案

 　智慧合約不一定構成合法的有效約束協議。一些法律學者聲稱，智慧合約不是法律協議，而是履行源自其他協議的義務的手段，例如用於支付義務自動化的技術手段或代幣或加密貨幣轉讓中的義務。

 量化交易的特點：

 1：紀律性

 Quantitative trading is based on automatic order placement,which ensures the objectivity and discipline of decision-making.

 2：大資料

 In the process of decision-making and research,quantitative trading will introduce a large amount of historical data for rapid calculation and analysis,and find out a set of replicable rules,which will be executed by machines.

 3：響應速度快

 This is the most obvious advantage of quantitative trading.Generally,the response speed of analysis and operation can reach the second level.High-frequency trading is even subtly calculated.When arbitrage opportunities appear in the market,only the fastest algorithm and network can seize them

 得分角度(因素)通常有以下幾點:

 1)Value factor:see the absolute valuation and relative valuation of the stock(valuation percentage points).Generally,stocks with low valuations score high.

 2)Growth factors:see revenue,net profit,cash flow growth rate and other indicators.The higher the growth rate,the higher the score.

 3)Profit factor:see gross profit rate,net profit rate,ROE and other indicators.The stronger the profitability,the higher the score.

 4)Scale factor:stock market value and circulating market value.Who gets the highest score depends on whether the fund manager prefers large-cap stocks or small-cap stocks.

 5)Momentum factor:It is generally understood that momentum factor analysis is technical analysis.

 智慧合約，是一種計算機程式或事務協議，其目的是自動執行，控制或檔案根據的條款在法律上相關的事件和行為的合同或協議。智慧合約的目標是減少可信賴中介人的需求、仲裁和執行成本，欺詐損失以及減少惡意和意外例外。

 /SPDX-License-Identifier:GPL-3.0

 pragma solidity>=0.7.0;

 contract Coin{

 //The keyword"public"makes variables

 //accessible from other contracts

 address public minter;

 mapping(address=>uint)public balances;

 //Events allow clients to react to specific

 //contract changes you declare

 event Sent(address from,address to,uint amount);

 //Constructor code is only run when the contract

 //is created

 constructor(){

 minter=msg.sender;

 }

 //Sends an amount of newly created coins to an address

 //Can only be called by the contract creator

 function mint(address receiver,uint amount)public{

 require(msg.sender==minter);

 require(amount<1e60);

 balances[receiver]+=amount;

 }

 //Sends an amount of existing coins

 //from any caller to an address

 function send(address receiver,uint amount)public{

 require(amount<=balances[msg.sender],"Insufficient balance.");

 balances[msg.sender]-=amount;

 balances[receiver]+=amount;

 emit Sent(msg.sender,receiver,amount);

 }

 }