filepath=r"Z:\F\第一阶段视频\20170424\vedio\大数据相关数据\csdn.txt"
file=open(filepath,"rb")

savefilepath=r"C:\Users\Tsinghua-yincheng\Desktop\day12up\csdneamil.txt"
savefile=open(savefilepath,"wb")
print("start")
for  line in  file: #遍历数据的每一行
    #print(line)#字符串
    linstr=line.decode("gbk","ignore") #解码
    mylist=linstr.split(" # ")
    #print(mylist[2],end="")#打印
    savefile.write(mylist[2].encode("utf-8"))
print("end")
savefile.close()
file.close()