math_functions.py 文件源码

def ATAN(df, price='Close'):
    """
    Arc Tangent
    """
    atan_list = []
    i = 0
    while i < len(df[price]):
        atan = cmath.atan(df[price][i]).real
        atan_list.append(atan)
        i += 1
    return atan_list