Contractual transaction refers to the transaction between the buyer and the seller in an agreement that a certain amount of certain assets will be received at a specified price at a certain time in the future. The trading object of contract trading is the standardized contract uniformly formulated by the Exchange, which stipulates the standardized information such as the type of commodity, trading time and quantity. The contract represents the rights and obligations of both parties.

简单点说就是现在约好未来某个时间地点交易【180-系统3831-开发9724】一定数量的某种商品。
合约交易是一种金融衍生品，相对于现货市场的交易，用户可以在期货合约交易中通过判断涨跌，选择买入做多或卖出做空合约，来获得价格上涨或者下跌带来的收益。量化交易程序代码如下：

　　import pandas as pd

　　from aip import AipOcr

　　import pyautogui

　　import pywinauto

　　import time

　　import ddddocr

　　import PIL

　　import akshare as ak

　　from PIL import Image,ImageDraw

　　import pyttsx3

　　from finta import TA

　　import quantstats as qs

　　import yagmail

　　import requests

　　from bs4 import BeautifulSoup

　　from lxml import etree

　　import schedule

　　import matplotlib.pyplot as plt

　　import mplfinance as mpf

　　app_id='252342421225'

　　api_key='grc71324214ewewlsl8zXo'

　　secret_key='ny8ClwdaLIDNaondoAINDOLH5jP9s6RbyG3'

　　#登录同花顺期货通

　　def featurns_log():

　　'''

　　登录同花顺期货通，手动启动程序可以不用调用这个函数

　　识别验证码自动登录

　　'''

　　import time

　　pywinauto.application.Application(backend='uia').start(r'E:同花顺期货通binhapp.exe')

　　pyttsx3.speak('运用启动成功')

　　#等待程序

　　time.sleep(1)

　　#最大化窗口

　　pyautogui.click(x=1379,y=18)

　　time.sleep(1)

　　#点击交易

　　pyautogui.click(x=941,y=17)

　　#选择模拟交易

　　pyautogui.click(x=1065,y=53)

　　time.sleep(1)

　　pyautogui.click(x=1155,y=85)

　　#等待程序响应

　　time.sleep(3)

　　#验证码区域截图

　　pyautogui.screenshot(imageFilename=r'C:UsersAdministratorDesktop期货交易验证本文由系统开发对接威：lovei130908编辑整理发布码.png',region=(1042,611,1099-1042,641-611))

　　#识别验证码

　　time.sleep(1)

　　ocr=ddddocr.DdddOcr()

　　with open(r'C:UsersAdministratorDesktop期货交易验证码.png','rb')as f: