Python3 os.chflags() Method

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Python3.x Python3 os.chflags() Method

Python3 OS File/Directory Methods

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Overview

The os.chflags() method is used to set the flags of a path to numeric flags. Multiple flags can be combined using OR.

It is only supported on Unix systems.

Syntax

The syntax for the chflags() method is as follows:

os.chflags(path, flags)

Parameters

• path -- The file path or directory path.
• flags -- Can be one of the following values:
  • stat.UF_NODUMP: Non-dump file
  • stat.UF_IMMUTABLE: File is read-only
  • stat.UF_APPEND: File can only be appended to
  • stat.UF_NOUNLINK: File cannot be deleted
  • stat.UF_OPAQUE: Directory is opaque, viewable through the union stack
  • stat.SF_ARCHIVED: Archived file (superuser can set)
  • stat.SF_IMMUTABLE: File is read-only (superuser can set)
  • stat.SF_APPEND: File can only be appended to (superuser can set)
  • stat.SF_NOUNLINK: File cannot be deleted (superuser can set)
  • stat.SF_SNAPSHOT: Snapshot file (superuser can set)

Return Value

This method does not return a value.

Example

The following example demonstrates the use of the chflags() method:

Example

#!/usr/bin/python3

import os, stat

path = "/tmp/foo.txt"

# Set flags for the file to make it unrenamable and undeletable
flags = stat.SF_NOUNLINK

retval = os.chflags(path, flags)

print("Return value: %s" % retval)

Executing the above program produces the following output:

Return value: None

Python3 OS File/Directory Methods