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#!/usr/bin/env python# -*- coding:utf-8 -*-#@Time :2017/10/28 9:13#@Author :zhouyuyao#@File :file_with.pyimport codecs
f = open('test.txt','r')
f.close()with codecs.open('test.txt','r') as f:
# 使用 with 无需在最后 close 关闭文件，读完后直接关闭 print(f.read())
print(f.closed)
print(f.closed) # 打印文件是否关闭 True or False
with codecs.open('test.txt','r') as f1:
for line,vlaue in enumerate(f1):
print(line,vlaue)
import linecache
count=linecache.getline('test.txt',4) # 打印文件的第四行
print(count)
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本文转自 归来仍少年 51CTO博客，原文链接:http://blog.51cto.com/shaoniana/1980536