Python: Get a directory listing sorted by creation date
Python Basic: Exercise-71 with Solution
Write a Python program to get a directory listing, sorted by creation date.
Sample Solution-1:
Python Code:
from stat import S_ISREG, ST_CTIME, ST_MODE
import os, sys, time
#Relative or absolute path to the directory
dir_path = sys.argv[1] if len(sys.argv) == 2 else r'.'
#all entries in the directory w/ stats
data = (os.path.join(dir_path, fn) for fn in os.listdir(dir_path))
data = ((os.stat(path), path) for path in data)
# regular files, insert creation date
data = ((stat[ST_CTIME], path)
for stat, path in data if S_ISREG(stat[ST_MODE]))
for cdate, path in sorted(data):
print(time.ctime(cdate), os.path.basename(path))
Sample Output:
Mon Feb 22 16:11:49 2016 .bash_logout Mon Feb 22 16:11:49 2016 .bashrc Mon Feb 22 16:11:49 2016 .profile Mon May 30 11:45:34 2016 .mysql_history Sat Aug 13 11:37:48 2016 logging_example.out Tue Sep 13 10:56:31 2016 result.txt Tue Sep 20 18:00:14 2016 dddd.txt ------- Tue Apr 18 15:06:27 2017 abc.txt Wed Apr 19 13:46:47 2017 .bash_history Wed Apr 19 15:15:52 2017 test.txt Wed Apr 19 16:58:20 2017 4ab8fe20-24f3-11e7-afe4-85767fd0ee52.py
Flowchart:
Sample Solution-2:
Python Code:
import os
import time
paths = ["%s %s" % (time.ctime(t),f) for t, f in
sorted([(os.path.getctime(x),x) for x in os.listdir(".")])]
print("Directory listing, sorted by creation date:")
for x in range(len(paths)):
print(paths[x],)
Sample Output:
Directory listing, sorted by creation date: Mon May 31 13:29:45 2021 main.py
Flowchart:
Python Code Editor:
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Python: Tips of the Day
Find current directory and file's directory:
To get the full path to the directory a Python file is contained in, write this in that file:
import os dir_path = os.path.dirname(os.path.realpath(__file__))
(Note that the incantation above won't work if you've already used os.chdir() to change your current working directory, since the value of the __file__ constant is relative to the current working directory and is not changed by an os.chdir() call.)
To get the current working directory use
import os cwd = os.getcwd()
Documentation references for the modules, constants and functions used above:
- The os and os.path modules.
- The __file__ constant
- os.path.realpath(path) (returns "the canonical path of the specified filename, eliminating any symbolic links encountered in the path")
- os.path.dirname(path) (returns "the directory name of pathname path")
- os.getcwd() (returns "a string representing the current working directory")
- os.chdir(path) ("change the current working directory to path")
Ref: https://bit.ly/3fy0R6m
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