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This article introduces you how to analyze the Python OS module, the content is very detailed, interested friends can refer to, hope to be helpful to you.

Python os module

The os module in Python's standard library contains common operating system functions. This module is especially important if you want your program to be platform-independent. That is, it allows a program to run under Linux and Windows without any changes or problems after it is written.

Some of the parts that are useful in the os module are listed below. Most of them are straightforward.

Os.sep can replace operating system-specific path separators.

The os.name string indicates the platform you are using. For example, for Windows, it is' nt', 'and for Linux/Unix users, it is' posix'.

The os.getcwd () function gets the current working directory, which is the directory path where the current Python script works.

The os.getenv () and os.putenv () functions are used to read and set environment variables, respectively.

Os.listdir () returns all file and directory names under the specified directory.

The os.remove () function is used to delete a file.

The os.system () function runs the shell command.

The os.mkdir () function is used to create a directory.

The os.makedirs () function is used to create a directory, which is created automatically if there is no directory in this path, which is equivalent to mkdir-p under linux.

The os.linesep string gives the line Terminator used by the current platform. For example, Windows uses'\ r\ n' while Mac uses'\ r'.

The os.path.split () function returns the directory name and file name of a path.

The os.path.isfile () and os.path.isdir () functions verify whether the given path is a file or a directory, respectively.

The os.path.existe () function is used to verify whether the given path really exists.

Os and os.path modules

Os.listdir (dirname): lists directories and files under dirname

Os.getcwd (): get the current working directory

Os.curdir: returns the previous directory ('.')

Os.chdir (dirname): change the working directory to dirname

Os.umask (mask): sets the current file permission mask and returns the previous permission mask.

Os.setsid (): make the process independent of the terminal (not responding to sigint,sighup, etc.), make it detached from the terminal.

Os.path.isdir (name): determines whether name is a directory, and name returns false if it is not a directory.

Os.path.isfile (name): determines whether name is a file, and returns false if name does not exist

Os.path.exists (name): determines whether a file or directory name exists

Os.path.getsize (name): gets the file size and returns 0L if name is a directory

Os.path.abspath (name): get the absolute path

Os.path.normpath (path): canonical path string form

Os.path.split (name): separate the file name from the directory (in fact, if you use the directory completely, it will also separate the last directory as the file name, and it will not determine whether the file or directory exists)

Os.path.splitext (): separate the file name from the extension

Os.path.join (path,name): connect a directory to a file name or directory

Os.path.basename (path): returns the file name

Os.path.dirname (path): returns the file path

Write something to increase familiarity

Code:

#! / usr/bin/python

Import os

Fadd = ("a.txt", "b.txt", "d/d.txt")

Fdel = ("c.txt",)

InputPath = raw_input ()

If (os.path.isdir (InputPath) = = False):

Print "you have input an incrrect path"

Else:

Os.chdir (InputPath)

Bf = os.listdir (InputPath)

For f in fadd:

(dr, fl) = os.path.split (f)

Ndr = os.getcwd () + "\"

If (drilled = ""):

Ndr = ndr+dr+ "\"

Os.mkdir (ndr)

Os.chdir (ndr)

Hf = file (ndr+fl,'w')

Hf.close ()

Os.chdir (InputPath)

For f in fdel:

Os.remove (f)

Af = os.listdir (InputPath)

On how to analyze the Python OS module to share here, I hope that the above content can be of some help to you, can learn more knowledge. If you think the article is good, you can share it for more people to see.

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