# How to change the permission of a file using Python?

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The user whose actions are allowed on a file are governed by its file permissions. A file's permissions for reading, writing, and executing are modified when the file's permissions are changed.

This article will cover how to change a file's permission in Python.

## Using os.chmod() Method

To modify the permissions of a file, use the os.chmod () method.

### Syntax

Following is the syntax for os.chmod() method −

os.chmod(path, mode)


Where, path represents the path of the file and mode contains different values as explained below.

There is no return value obtained in this method.

### Os.chmod() modes

Following are the different mode arguments of os.chmod() −

• stat.S_ISUID − On execution, set the group ID.
• stat.S_ENFMT − Records must be locked.
• stat.S_ISVTX − after execution, saves the text image
• stat.S_IWRITE − Writing by owner.
• stat.S_IEXEC − Execution by owner.
• stat.S_IRWXU − Reading, writing, and execution by owner
• stat.S_IRUSR − Reading by owner
• stat.S_IWUSR − Writing by owner.
• stat.S_IXUSR − Execution by owner.
• stat.S_IRWXG − Reading, writing, and execution by group
• stat.S_IRGRP − Reading by group
• stat.S_IWGRP − Writing by group
• stat.S_IXGRP − Execution by group
• stat.S_IRWXO − Reading, writing, and execution by others.
• stat.S_IROTH − Reading by others
• stat.S_IWOTH − Writing by others
• stat.S_IXOTH − Execution by others

### Example - 1

Following is an example to change the permission of a file −

import os
import sys
import stat

# Setting the given file to be read by the owner.
print("The file can only be ready by owner")

# Setting the given file to be read by group.
print("The file access gets changed, now it can be read by group.")


### Output

Following is an output of the above code −

The file can only be ready by owner
The file access gets changed, now it can be read by group


### Example - 2

Following is an example to change the permission of a file −

import os
import sys
import stat

# Setting the given file to be read, write and execute by group.
print("The file can be read, write and execute by group"

# Setting the given file to be read, write and execute by others.
print("The file access gets changed, now it can be read, write and execute by others.")


### Output

Following is an output of the above code −

The file can be read, write and execute by group
The file access gets changed, now it can be read, write and execute by others


## Using Linux

We can change the permission of a file or a directory in Linux using subprocess.call() function. Python's subprocess contains a call() method that is utilised to start an application.

### Example

Following is an example to change the permission of a file using subprocess.call() function −

import subprocess
subprocess.call(['chmod', '0444', 'myFile.txt'])


### Output

As an output we will be able to see that the permission of the file got changed.

Updated on 18-Aug-2022 07:28:49