python 数组保存到文件 python保存数组到csv

1.

import numpy as np
np.savetxt('E:\\forpython\\featvector.csv',data_to_save,delimiter=',')

2.

import pandas as pd
 list=[[1,2,3],[4,5,6],[7,9,9]]
 name=['one','two','three']
 test=pd.DataFrame(columns=name,data=list)#数据有三列，列名分别为one,two,three
 print(test)
 test.to_csv('e:/testcsv.csv',encoding='gbk')

使用gbk编码错误时使用utf-8,保存到csv文件的中文乱码，将其改为utf-8-sig后正常