python 示例_带有示例的Python中的OS模块

偏执的太偏执、 2023-03-05 12:43 166阅读 0赞

python 示例

## Python操作系统模块 **(**Python os Module**)** ##

The **os module** provides us with a lot of functions that used to interact with the operating system. There is no need to install the **os module** because it is an inbuilt module in Python. By using it, we can perform more tasks such as we can get the name of the operating system, navigate the file system, and many other operations are performed.

**os模块**为我们提供了许多用于与操作系统交互的功能。 无需安装**os模块，**因为它是Python中的内置模块。 通过使用它，我们可以执行更多任务，例如获得操作系统名称，导航文件系统以及执行许多其他操作。

There are many directives in the os module. We can know the all directive by using the **dir() function**. Let's see it,

os模块中有许多指令。 通过使用**dir()函数，**我们可以知道all指令。 让我们来看看它，

# importing the os module
    import os 
    
    # printing the directives
    print('All directive of os module are:',dir(os))

**Output**

**输出量**

All directive of os module are: ['DirEntry', 'F_OK', 'MutableMapping', 'O_APPEND', 
    'O_BINARY', 'O_CREAT', 'O_EXCL', 'O_NOINHERIT', 'O_RANDOM', 'O_RDONLY', 'O_RDWR', 
    'O_SEQUENTIAL', 'O_SHORT_LIVED', 'O_TEMPORARY', 'O_TEXT', 'O_TRUNC', 'O_WRONLY', 
    'P_DETACH', 'P_NOWAIT', 'P_NOWAITO', 'P_OVERLAY', 'P_WAIT', 'PathLike', 'R_OK', 
    'SEEK_CUR', 'SEEK_END', 'SEEK_SET', 'TMP_MAX', 'W_OK', 'X_OK', '_Environ', 
    '__all__', '__builtins__', '__cached__', '__doc__', '__file__', '__loader__', 
    '__name__', '__package__', '__spec__', '_execvpe', '_exists', '_exit', '_fspath', 
    '_get_exports_list', '_putenv', '_unsetenv', '_wrap_close', 'abc', 'abort', 'access', 
    'altsep', 'chdir', 'chmod', 'close', 'closerange', 'cpu_count', 'curdir', 'defpath', 
    'device_encoding', 'devnull', 'dup', 'dup2', 'environ', 'error', 'execl', 'execle', 
    'execlp', 'execlpe', 'execv', 'execve', 'execvp', 'execvpe', 'extsep', 'fdopen', 
    'fsdecode', 'fsencode', 'fspath', 'fstat', 'fsync', 'ftruncate', 'get_exec_path', 
    'get_handle_inheritable', 'get_inheritable', 'get_terminal_size', 'getcwd', 'getcwdb', 
    'getenv', 'getlogin', 'getpid', 'getppid', 'isatty', 'kill', 'linesep', 'link', 
    'listdir', 'lseek', 'lstat', 'makedirs', 'mkdir', 'name', 'open', 'pardir', 'path', 
    'pathsep', 'pipe', 'popen', 'putenv', 'read', 'readlink', 'remove', 'removedirs', 
    'rename', 'renames', 'replace', 'rmdir', 'scandir', 'sep', 'set_handle_inheritable', 
    'set_inheritable', 'spawnl', 'spawnle', 'spawnv', 'spawnve', 'st', 'startfile', 
    'stat', 'stat_result', 'statvfs_result', 'strerror', 'supports_bytes_environ', 
    'supports_dir_fd', 'supports_effective_ids', 'supports_fd', 'supports_follow_symlinks', 
    'symlink', 'sys', 'system', 'terminal_size', 'times', 'times_result', 'truncate', 
    'umask', 'uname_result', 'unlink', 'urandom', 'utime', 'waitpid', 'walk', 'write']

In this tutorial, we will cover some important functions of the **os module**.

在本教程中，我们将介绍**os模块的**一些重要功能。

### os模块的一些重要功能 **(**Some important function of the os module**)** ###

**1) os.name**

**1)操作系统名称**

This function gives the name of the operating system that we are running in own system. The output of this function may vary from system to system because all are not using the same operating system.

该函数给出了我们在自己的系统中运行的操作系统的名称。 此功能的输出可能因系统而异，因为所有系统均未使用同一操作系统。

# importing the os module
    import os 
    
    # getting & printing the name of the OS
    print( 'Name of operating system: ',os.name)

**Output**

**输出量**

Name of operating system:  nt #windows nt is 32 bit operating system.

**2) os.getcwd()**

**2)os.getcwd()**

This function returns the name of the current working directive of the file that was used to execute the code.

此函数返回用于执行代码的文件的当前工作指令的名称。

# importing the os module
    import os 
    
    # getting & printing the current working directory
    print( 'location of the file:',os.getcwd())

**Output**

**输出量**

location of the file: C:\Users\BIPIN KUMAR

**3) os.chdir()**

**3)os.chdir()**

This function is used to change the path of the file that was used to execute the code. It takes the new path in the form of string as a parameter. Before going to change the directory, we make a new directory by using the **mkdir() function**.

此函数用于更改用于执行代码的文件的路径。 它以字符串形式的新路径作为参数。 在更改目录之前，我们使用**mkdir()函数**创建一个新目录。

# importing the os module
    import os 
    
    # creates a temporary directory
    os.mkdir('d:\\tempdirectory') 
    # getting & printing the current working directory
    print( 'location of the file:',os.getcwd())
    
    # changing the directory
    os.chdir('E:\\tempdirectory') 
    # getting & printing the current working directory
    print( 'New location of the file:',os.getcwd())

**Output**

**输出量**

location of the file: C:\Users\BIPIN KUMAR
    New location of the file: E:\tempdirectory

> 翻译自: [https://www.includehelp.com/python/os-module-in-python-with-examples.aspx][https_www.includehelp.com_python_os-module-in-python-with-examples.aspx]

python 示例

[https_www.includehelp.com_python_os-module-in-python-with-examples.aspx]: https://www.includehelp.com/python/os-module-in-python-with-examples.aspx