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Python: Sort files by date

Python Basic: Exercise-70 with Solution

Write a Python program to sort files by date.

Sample Solution-1:

Python Code:

import glob
import os

files = glob.glob("*.txt")
files.sort(key=os.path.getmtime)
print("\n".join(files))

Sample Output: 

result.txt
temp.txt
myfile.txt
mynewtest.txt
mytest.txt
abc.txt
test.txt

Sample Solution-2:

Python Code:

import os
os.chdir('d:')
result = sorted(filter(os.path.isfile, os.listdir('.')), key=os.path.getmtime)
print('\n'.join(map(str, result)))

Sample Output: 

msdia80.dll
eula.1028.txt
eula.1031.txt
eula.1033.txt
eula.1036.txt
eula.1040.txt
eula.1041.txt
eula.1042.txt
eula.2052.txt
eula.3082.txt
globdata.ini
install.ini
vcredist.bmp
install.exe
install.res.1028.dll
install.res.1031.dll
install.res.1033.dll
install.res.1036.dll
install.res.1040.dll
install.res.1041.dll
install.res.1042.dll
install.res.2052.dll
install.res.3082.dll
VC_RED.cab
VC_RED.MSI
hr
psr (Autosaved).xlsx
share-mutualfund.xlsx
sqlite3.dll
sqlite3.def
abcd.txt
visustin.txt
index.html
script.js
LICENSE
java-array-exercise-flowchart-35.png
Main.java
ezgif.com-gif-maker.png
computer.png
How To Use Sets in Python (Python Tutorial .mp4
w3resource-logo.png
math_expression_commands.txt
5C90A0D8.tmp
Dreamweaver 8.zip
Dreamweaver8-en.zip
pandas-series-loc-7 (2).zip
Local Disk (C) - Shortcut.lnk
BMCASSET.zip
psr.xlsx

Python Code Editor:

 

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Previous: Write a Python program to sort three integers without using conditional statements and loops.
Next: Write a Python program to get a directory listing, sorted by creation date.

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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