Python3 os.fstat() Method | Tutorial

Python3.x Python3 os.fstat() Method

Python3 OS File/Directory Methods

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Overview

The os.fstat() method is used to return the status of the file descriptor fd, similar to stat().

Available on Unix and Windows.

The structure returned by the fstat method:

• st_dev: Device information
• st_ino: The i-node value of the file
• st_mode: A mask for the file information, which includes the file's permission information and file type information (whether it's a regular file, a pipe file, or another file type)
• st_nlink: Number of hard links
• st_uid: User ID
• st_gid: User group ID
• st_rdev: Device ID (if the specified file is a device file)
• st_size: File size, in bytes
• st_blksize: Block size for system I/O
• st_blocks: Number of 512-byte blocks allocated for the file
• st_atime: Time of most recent access
• st_mtime: Time of most recent modification
• st_ctime: Time of most recent status change (not the time of modification of the file content)

Syntax

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

os.fstat(fd)

Parameters

• fd -- The file descriptor.

Return Value

Returns the status of the file descriptor fd.

Example

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

#!/usr/bin/python3
import os, sys

# Open file
fd = os.open( "foo.txt", os.O_RDWR|os.O_CREAT )

# Get tuple
info = os.fstat(fd)
print ("File info :", info)

# Get file uid
print ("File UID :%d" % info.st_uid)

# Get file gid
print ("File GID :%d" % info.st_gid)

# Close file
os.close( fd)

Executing the above program outputs the following result:

File info : (33261, 3753776L, 103L, 1, 0, 0, 102L, 1238783197, 1238786767, 1238786767)
File UID :0
File GID :0

Python3 OS File/Directory Methods