将DataFrame转换为字典

参考文章 https://daixiang.blog.csdn.net/article/details/79634632

import numpy as np
import pandas as pd

N = 5
delta1 = np.random.normal(loc =0.0 , scale= 1.0,size = (N,))
delta2 = np.random.normal(loc =0.4 , scale= 2.0,size = (N,))
delta  = {'delta1':delta1,'delta2':delta2}

df = pd.DataFrame(delta)
data = df.to_dict('list')   # 注意要写上'list'，否则转换出的字典会保留列序号
data['delta2']