linux下python指定编码写文件让windows下查看不乱码

import sys
import chardet
reload(sys)

print sys.getdefaultencoding()  >> ascii
sys.setdefaultencoding('utf-8')  #重新指定python 的编码格式
print sys.getdefaultencoding()  >> utf-8
python 默认的编码是ascii 把他设为 utf-8

f=open("180230-pass.csv",'rb')
data=f.read()
print chardet.detect(data)
with open("180230-pass.csv",'rb') as f:
  for line in f:
    print line
    print sys.getdefaultencoding()
    print chardet.detect(line)
    line = line.encode("gb2312") ################## 把utf-8编码成gb2312或gbk
    #line = line.encode('utf-8').encode("gb2312")
    with open("testtt12.txt",'a') as fw:
      fw.write(line)

这样长生的文件windows下打开就不会是乱码