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