python基金量化 分析 小程序

import re
import time
import matplotlib.pyplot as plt
import requests
import demjson

html=requests.get("http://fund.eastmoney.com/pingzhongdata/000522.js?v=20160518155842").text

dataPattern= re.compile("var Data_netWorthTrend = (\[.*?\]);")
targetStr = re.findall(dataPattern,html)
equityDataList=demjson.decode(targetStr[0])

for item in equityDataList:
    item['x']= time.strftime("%Y-%m-%d", time.localtime(item['x'] / 1000))

xData=list(map(lambda item:item.get('x') ,equityDataList))
yData =list(map(lambda item:item.get('y') ,equityDataList))

plt.rcParams['font.sans-serif']=['SimHei'] #用来正常显示中文标签
plt.rcParams['axes.unicode_minus']=False #用来正常显示负号
# 一个基本的折线图
plt.figure(figsize=(12,5))
plt.title("华润元大信息传媒科技混合-单位净值走势折线图")
# 收盘价的折线图
plt.xlabel("日期")

# x=[]
# for i in range(0,len(xData),30):
#     x.append(xData[i])

plt.xticks([i for i in range(0, len(xData), 30)],[xData[i] for i in range(0,len(xData),30)],rotation=45)
plt.plot_date(xData,yData,'-',label="单位净值")

print(yData[-1], yData[-2])
difValue =yData[-1]-yData[-2]
print(difValue/yData[-2])

plt.show()