python 用codecs实现数据的读取

import numpy as np
import codecs
f=codecs.open('testsklearn.txt','r','utf-8').readlines()
print(f)
dataset=list()
for i in f:
    list_data= i.split(',')
    List=list();
    for j in list_data:
        data=float(j)
        List.append(data)
    dataset.append(List)
 
dataset1=np.array(dataset)
print(type(dataset1))
X = dataset1[:,0:7]
y = dataset1[:,8]