Python| os.unlink() 方法

Python中的OS 模块提供了与操作系统交互的功能。操作系统属于 Python 的标准实用程序模块。该模块提供了一种使用操作系统相关功能的可移植方式。

os 模块中的所有函数在文件名和路径无效或不可访问的情况下，或具有正确类型但操作系统不接受的其他参数的情况下引发OSError 。

Python中的os.unlink()方法用于删除或删除文件路径。此方法在语义上与 os.remove() 方法相同。
像os.remove()方法一样，它也不能删除或删除目录。如果给定路径是目录，则此方法将引发IsADirectoryError异常。 os.rmdir()方法可用于删除目录。

Syntax: os.unlink(path, *, dir_fd = None)

Parameter:
path: A path-like object representing a file path. A path-like object is either a string or bytes object representing a path.
dir_fd (optional) : A file descriptor referring to a directory. The default value of this parameter is None.
If the specified path is absolute then dir_fd is ignored.

Note: The ‘*’ in parameter list indicates that all following parameters (Here in our case ‘dir_fd’) are keyword-only parameters and they can be provided using their name, not as positional parameter.

Return Type: This method does not return any value.

编程需要懂一点英语

代码 #1：使用 os.unlink() 方法删除或删除文件路径

# Python program to explain os.unlink() method 
    
# importing os module 
import os
  
# File Path
path = "/home / ihritik / Documents / file1.txt"
  
  
# Remove the file path
# using os.unlink() method
os.unlink(path)
  
print("File path has been removed successfully")

输出：

File path has been removed successfully

代码#2：如果给定的路径是一个目录

# Python program to explain os.unlink() method 
    
# importing os module 
import os
  
# Path
path = "/home / User / Documents / ihritik"
  
  
# if the given path 
# is a directory then 
# 'IsADirectoryError' exception
# will raised 
  
# Remove the given
# file path
os.unlink(path)
print("File path has been removed successfully")
  
# Similarly, if the specified
# file path does not exists or  
# is invalid then corresponding
# OSError will be raised

输出：

Traceback (most recent call last):
  File "unlink.py", line 17, in 
    os.unlink(path)
IsADirectoryError: [Errno 21] Is a directory: '/home/User/Documents/ihritik'

代码 #3：使用 os.unlink() 方法处理错误

# Python program to explain os.unlink() method 
    
# importing os module 
import os
  
# path
path = '/home / User / Documents / ihritik'
  
# Try Removing the given 
# file path using
# try and except block 
try:
    os.unlink(path)
    print("File path removed successfully")
  
# If the given path is 
# a directory
except IsADirectoryError:
    print("The given path is a directory")
  
# If path is invalid
# or does not exists
except FileNotFoundError :
    print("No such file or directory found.")
  
# If the process has not
# the permission to remove
# the given file path 
except PermissionError:
    print("Permission denied")
  
# For other errors
except :
    print("File can not be removed")

输出：

The given path is a directory

参考： https://docs。 Python.org/3/library/os.html