python-大智慧-BIAS乖离率编写

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# -*- coding: utf-8 -*-"""Created on Wed May 24 15:47:51 2017@author: yunjinqi  E-mail:yunjinqi@qq.com  Differentiate yourself in the world from anyone else."""import pandas as pd  import numpy as np  import datetime  import time  #获取数据  df=pd.read_csv('C:/Users/HXWD/Desktop/000001.csv',encoding='gbk')  df.columns=['date','code','name','close','high','low','open','preclose',  'change','change_per','volume','amt']  df=df[['date','open','high','low','close','volume','amt']]  df.head()  def get_BIAS(df,L1=6,L2=12,L3=24):    '''    乖离率算法:    当日收盘价与移动平均线之间的差距;用法:    正的乖离率愈大,表示短期获利愈大,则获利回吐的可能性愈高;负的乖离率愈大,则空头回补的可能性愈高。    按个股收盘价与不同天数的平均价之间的差距,可绘制不同的BIAS线。参数:    系统绘制三条BIAS线,分别为收盘价与L1日、L2日、L3日移动平均价的差。'''    df['bias1']=100*(df['close']-df['close'].rolling(L1).mean())/df['close'].rolling(L1).mean()    df['bias2']=100*(df['close']-df['close'].rolling(L2).mean())/df['close'].rolling(L1).mean()    df['bias3']=100*(df['close']-df['close'].rolling(L3).mean())/df['close'].rolling(L1).mean()    return dfget_BIAS(df)df.tail()

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