technical.py 文件源码

def STO(df, n):  
    SOk = pd.Series((df['Close'] - df['Low']) / (df['High'] - df['Low']), name = 'SO%k')  
    SOd = pd.Series(pd.ewma(SOk, span = n, min_periods = n - 1), name = 'SO%d_' + str(n))  
    df = df.join(SOd)  
    return df

#Trix