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Python: Get information about the file pertaining to the file mode

Python Operating System Services: Exercise-15 with Solution

Write a Python program to get information about the file pertaining to the file mode. Print the information - ID of device containing file, inode number, protection, number of hard links, user ID of owner, group ID of owner, total size (in bytes), time of last access, time of last modification and time of last status change.

Sample Solution:

Python Code :

import os
path ='e:\\testpath\\p.txt'
fd = os.open(path, os.O_RDWR)
info = os.fstat(fd)
print (f"ID of device containing file: {info.st_dev}")
print (f"Inode number: {info.st_ino}")
print (f"Protection: {info.st_mode}")
print (f"Number of hard links: {info.st_nlink}")
print (f"User ID of owner: {info.st_uid}")
print (f"Group ID of owner: {info.st_gid}")
print (f"Total size, in bytes: {info.st_size}")
print (f"Time of last access: {info.st_atime}")
print (f"Time of last modification: {info.st_mtime }")
print (f"Time of last status change: {info.st_ctime }")
os.close( fd)

Sample Output:

ID of device containing file: 1181298613
Inode number: 3096224744097510
Protection: 33206
Number of hard links: 1
User ID of owner: 0
Group ID of owner: 0
Total size, in bytes: 44
Time of last access: 1579262486.6472013
Time of last modification: 1579262516.1362014
Time of last status change: 1579262486.6472013

Python Code Editor:

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Python: Tips of the Day

Groups the elements of a list based on the given function and returns the count of elements in each group

Example:

def tips_count(arr, fn=lambda x: x):
  key = {}
  for el in map(fn, arr):
    key[el] = 1 if el not in key else key[el] + 1
  return key

from math import floor
print(tips_count([5.5, 3.2, 5.3], floor))
print(tips_count(['red', 'white', 'orange'], len))

Output:

{6: 2, 4: 1}
{3: 2, 5: 1}