python 读取文件时记录读取的最后一行，下次读取时从最后一行开始读取

Question

如题所述

Answer 1

fp = open("file")
for i, line in enumerate(fp):
if i == 25: # 26th line
elif i == 29: # 30th line
elif i > 29:
break
fp.close()
或者：
import linecache

file=open('3_2.txt','r')

linecount=len(file.readlines())

linecache.getline('3_2.txt',linecount)