import os

f = open("d:\\603192.csv","rb+")

lines = f.readlines()  # 读取所有行
last_line = lines[-1]

   for i in range(len(last_line) + 2):

   f.seek(-1, os.SEEK_END)

   f.truncate()

f.close()

import os

f = open("d:\\603192.csv","rb+")


lines = f.readlines()  # 读取所有行

m=-1  # 取最后一行

for j in range(13) : #删除13行，替换要删除的行数

   last_line = lines[m]

   for i in range(len(last_line) + 2):

       f.seek(-1, os.SEEK_END)

       f.truncate()

   m=m-1
f.close()