Python standard library--os module

This module contains common operating system functions. This module is especially important if you want your program to be platform-agnostic. That is, it allows a program to be written without any changes or problems, and can be run under Linux and Windows. An example is os.sep the use of a path delimiter that can replace an operating system specific.

Some os of the more useful parts of the module are listed below. Most of them are simple and straightforward.

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 of the current Python script work. 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 is used to run the shell command. The

• os.linesep string gives the line terminator used by the current platform. For example, Windows uses ' \ r \ n ' , Linux uses ' \ n ' and Mac uses ' \ R ' . The

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

  >>> os.path.split ('/home/swaroop/byte/code/poem.txt ')
('/home/swaroop/ Byte/code ', ' poem.txt ')

• os.path.isfile () and Os.path.isdir () The function verifies that the given path is a file or a directory, respectively. Similarly, the os.path.existe () function is used to verify that the given path really exists.

You can use the Python standard documentation to explore more detailed knowledge of these functions and variables. You can also use help(sys) and so on.

Python standard library--os module