Home Backend Development Python Tutorial Python文件及目录操作实例详解

Python文件及目录操作实例详解

Jun 10, 2016 pm 03:10 PM
python document Table of contents

本文实例讲述了Python文件及目录操作的方法。分享给大家供大家参考。具体分析如下:

在python中对文件及目录的操作一般涉及多os模块,os.path模块。具体函数以及使用方法在程序中说明。

#!/usr/bin/env python
#-*- coding=UTF8 -*-
import os
import os.path as op
def change_dir():
  '''
 该函数显示及改变前目录
 using chdir() to change current dir
    getcwd() can show the current working directory
  '''
  directory="/tmp"
  #使用getcwd()返回当前目录
  print os.getcwd()
  #chdir改变当前目录为:directory目录
  os.chdir(directory)
  print os.getcwd()
def show_filesOfdir(whichDir):
  '''
 此函数只显示目录下的所有文件
 using listdir() to shows all of the file execpt directory
   join() function catenate 'whichDir' with listdir() returns values
   isfile() check that file is a regular file
   '''  
   #listdir() 函数显示前目录的内容
  for file in os.listdir(whichDir):
 #利用join()把whichDir目录及listdir() 返回值连接起来组成合法路径
    file_name = op.join(whichDir,file)
 #isfile()函数可以判断该路径上的文件是否为一个普通文件
    if op.isfile(file_name):
      print file_name
def printaccess(path):
  ''' 
 显示文件的最后访问时间,修改时间
 shows 'path' the last access time 
      getatime() return the time of last access of path
   stat() return information of a file,use its st_atime return the time of last access
   ctime() return a string of local time
  '''
  import time
  #利用ctime()函数返回最后访问时间
  #getatime()函数返回最后访问时间,不过是以秒为单位(从新纪元起计算)
  print time.ctime(op.getatime(path))
  #stat()函数返回一个对象包含文件的信息
  stat = os.stat(path)
  #st_atime 最后一次访问的时间
  print time.ctime(stat.st_atime)
  print the modify time
  print "modify time is:",
  print time.ctime(op.getctime(path))
  print "modify time is:",
  #st_ctime 最后一次修改的时间
  print time.ctime(stat.st_ctime)
def isDIR(path):
  '''
 一个os.path.isdir()函数的实现
 Implement isdir() function by myself
  '''
  import stat
  MODE = os.stat(path).st_mode
  #返回真假值
  return stat.S_ISDIR(MODE)
if __name__== "__main__":
  change_dir()
  show_filesOfdir('''/root''')
  printaccess('/etc/passwd')
  print isDIR('/etc')

Copy after login

希望本文所述对大家的Python程序设计有所帮助。

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Roblox: Bubble Gum Simulator Infinity - How To Get And Use Royal Keys
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Nordhold: Fusion System, Explained
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Hot Topics

Java Tutorial
1664
14
PHP Tutorial
1268
29
C# Tutorial
1248
24
PHP and Python: Different Paradigms Explained PHP and Python: Different Paradigms Explained Apr 18, 2025 am 12:26 AM

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

Choosing Between PHP and Python: A Guide Choosing Between PHP and Python: A Guide Apr 18, 2025 am 12:24 AM

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

PHP and Python: A Deep Dive into Their History PHP and Python: A Deep Dive into Their History Apr 18, 2025 am 12:25 AM

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

How to run sublime code python How to run sublime code python Apr 16, 2025 am 08:48 AM

To run Python code in Sublime Text, you need to install the Python plug-in first, then create a .py file and write the code, and finally press Ctrl B to run the code, and the output will be displayed in the console.

Python vs. JavaScript: The Learning Curve and Ease of Use Python vs. JavaScript: The Learning Curve and Ease of Use Apr 16, 2025 am 12:12 AM

Python is more suitable for beginners, with a smooth learning curve and concise syntax; JavaScript is suitable for front-end development, with a steep learning curve and flexible syntax. 1. Python syntax is intuitive and suitable for data science and back-end development. 2. JavaScript is flexible and widely used in front-end and server-side programming.

Golang vs. Python: Performance and Scalability Golang vs. Python: Performance and Scalability Apr 19, 2025 am 12:18 AM

Golang is better than Python in terms of performance and scalability. 1) Golang's compilation-type characteristics and efficient concurrency model make it perform well in high concurrency scenarios. 2) Python, as an interpreted language, executes slowly, but can optimize performance through tools such as Cython.

Where to write code in vscode Where to write code in vscode Apr 15, 2025 pm 09:54 PM

Writing code in Visual Studio Code (VSCode) is simple and easy to use. Just install VSCode, create a project, select a language, create a file, write code, save and run it. The advantages of VSCode include cross-platform, free and open source, powerful features, rich extensions, and lightweight and fast.

How to run python with notepad How to run python with notepad Apr 16, 2025 pm 07:33 PM

Running Python code in Notepad requires the Python executable and NppExec plug-in to be installed. After installing Python and adding PATH to it, configure the command "python" and the parameter "{CURRENT_DIRECTORY}{FILE_NAME}" in the NppExec plug-in to run Python code in Notepad through the shortcut key "F6".

See all articles