Question

Write a program to count a number of files for each extension in the given directory. The program should take a directory name as argument and print count and extension for each available file extension. For example, the output would be something like this:

python counter.py \yourpathhere

14 py

4 txt

1 csv

Answer 1

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• I'm printing count,extension in ascending order.
  • If you want me to add/change anything, Please let me know by commenting.
• Please refer to the screenshot of the code to understand the indentation of the code
• I used comments for better understanding. Comments starts with symbol '#'

Language : Python

IDE : Python IDLE

::::::::::::::::::::::::::::::::::::::: CODE :::::::::::::::::::::::::::::::::::

# import sys and os libraries

import sys

from os import listdir

# get path from commandline arguments

path = sys.argv[1]

# get files with in the given path

files = listdir(path)

# dictionary to store extensions count

ext = dict()

# for all files with in directory

for filename in files:

   # split filename by last occurence of '.'

   res = filename.rsplit('.',1)

   # if length of res is 1 then it is folder.

   # if length of res is 2 or more then it has extension

   if(len(res)!=1):

      # if extension not in dictionary

      if res[1] not in ext.keys():

         # add extension with value 1

         ext[res[1]] = 1

      else:

         # otherwise increase extension value by 1

         ext[res[1]] += 1

# store sorted extension dictionary by count

ext = sorted(ext.items(),key=lambda x:x[1],reverse=True)

# for all extens print count and extension

for extension,count in ext:

   print(count,extension)

:::::::::::::::::::::::::::::::::::::: OUTPUT ::::::::::::::::::::::::::::::::::

GL C:\Windows\system32\cmd.exe X E: >python Files.py E:\ 33 py 17 CPP 13 C 13 txt 5 ipynb 3 m 2 rap 1 BIN 1 java 1 scm 1 jpg 1 fprg 1 CS E:>python Files.py "E:\Entertainment\HD Video Songs" 17 mp4 12 webm E:>

:::::::::::::::::::::::::::::::::::::: CODE in EDITOR ::::::::::::::::::::::::::::::::::

le Files.py - E:/Files.py (3.8.4) File Edit Format Run Options Window Help import sys and os libraries import sys from os import listdir # get path from commandline arguments path sys.argv[1] = # get files with in the given path files = listdir (path) # dictionary to store extensions count ext dict() # for all files with in directory for filename in files: # split filename by last occurence of '.' filename.rsplit('.',1) res = # if length of res is 1 then it is folder. # if length of res is 2 then it has extension if(len (res) !=1): # if extension not in dictionary if res[1] not in ext. keys (): # add extension with value 1 ext[res[1]] = 1 else: # otherwise increase extension value by 1 ext[res[1]] += 1 # store sorted extension dictionary by count = sorted (ext.items (), key=lambda x:x[1], reverse=True) ext # for all extens print count and extension for extension, count in ext: print (count, extension)

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