Python os.lchown()用法及代碼示例

Python中的OS模塊提供了與操作係統進行交互的函數。操作係統屬於Python的標準實用程序模塊。該模塊提供了使用依賴於操作係統的函數的便攜式方法。

如果文件名和路徑無效或無法訪問，或者具有正確類型但操作係統不接受的其他參數，則os模塊中的所有函數都會引發OSError。

os.lchown()Python中的方法用於將指定文件路徑的所有者和組ID更改為指定的數字所有者ID(UID)和組ID(GID)。此方法不遵循符號鏈接，等效於os.chown(path, uid, gid, follow_symlinks = False)方法。

注意： os.lchown()該方法僅在UNIX平台上可用，並且該方法的函數通常僅對超級用戶或特權用戶可用。

用法： os.lchown(pth, uid, gid)

參數：
路徑：path-like對象，表示要為其設置所有權的he文件路徑。
uid：一個整數值，表示要為文件設置的所有者ID。
id：一個整數值，表示要為文件設置的組ID。

返回類型：此方法不返回任何值。

代碼1：os.lchown()方法的使用

# Python program to explain os.lchown() method  
    
# importing os module  
import os 
  
# File path 
path = "./file.txt"
  
# Print the current owner id 
# and group id of the file 
  
# os.stat() method will return a  
# 'stat_result’ object of 
# ‘os.stat_result’ class whose 
# 'st_uid' and 'st_gid' attributes 
# will represent owner id and group id 
# of the file respectively  
print("Owner id of the file:", os.stat(path).st_uid) 
print("Group id of the file:", os.stat(path).st_gid)  
  
  
# Change the owner id and  
# the group id of the file 
# using os.lchown() method 
uid = 400
gid = 500
os.lchown(path, uid, gid) 
print("\nOwner and group id of the file changed") 
  
   
# Print the owner id 
# and group id of the file 
print("\nOwner id of the file:", os.stat(path).st_uid) 
print("Group id of the file:", os.stat(path).st_gid)

輸出：
os.lchown() mwthod terminal output

代碼2：使用os.lchown()方法設置任何一個ID，其他保持不變。

# Python program to explain os.lchown() method  
    
# importing os module  
import os 
  
# File path 
path = "./file.txt"
  
# Print the current owner id 
# and group id of the file 
  
# os.stat() method will return a  
# 'stat_result’ object of 
# ‘os.stat_result’ class whose 
# 'st_uid' and 'st_gid' attributes 
# will represent owner id and group id 
# of the file respectively  
print("Owner id of the file:", os.stat(path).st_uid) 
print("Group id of the file:", os.stat(path).st_gid)  
  
  
# Change only group id of  
# the file and leave  
# owner id unchanged 
  
# set id as -1 to leave 
# it unchanged 
uid = 1000
gid = -1
os.lchown(path, uid, gid) 
print("\ngroup id of the file changed") 
  
   
# Print the owner id 
# and group id of the file 
print("\nOwner id of the file:", os.stat(path).st_uid) 
print("Group id of the file:", os.stat(path).st_gid)

輸出：
os.lchown() method terminal output

代碼3：如果指定的路徑是符號鏈接

# Python program to explain os.lchown() method  
    
# importing os module  
import os 
  
# File path 
path = "./file.txt"
  
  
# Creating a symlink 
# of the above path   
# using os.symlink() method 
symlink = "file(symlink).txt"
os.symlink(path, symlink) 
   
# Print the current owner id 
# and group id of the file 
# as well as the symlink pointing 
# to the above specified file path  
print("Owner id of the file:", os.stat(path).st_uid) 
print("Group id of the file:", os.stat(path).st_gid)  
  
print("Owner id of the symlink:", os.stat(symlink).st_uid) 
print("Group id of the symlink:", os.stat(symlink).st_gid)  
  
# Change the owenership  
# of the symlink pointing  
# to the above file 'file.txt' 
uid = 600
gid = 700
os.lchown(symlink, uid, gid) 
print("\nOwner id and group id changed") 
  
  
# Print the owner id 
# and group id of the file 
# as well as the symlink pointing 
# to the above specified file path 
print("\nOwner id of the file:", os.stat(path).st_uid) 
print("Group id of the file:", os.stat(path).st_gid)  
  
print("Owner id of the symlink:", os.stat(symlink).st_uid) 
print("Group id of the symlink:", os.stat(symlink).st_gid) 
  
  
# As os.lchown() method 
# does not follow symlinks 
# so, we can not change the 
# owner and group id  
# through a symlink

輸出：
os.lchown() method terminal output

參考： https://docs.python.org/3/library/os.html

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注：本文由純淨天空篩選整理自ihritik大神的英文原創作品 Python | os.lchown() method。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。