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# Script Name : folder_size.py

# Author : Craig Richards

# Created : 19th July 2012

# Last Modified : 22 February 2016

# Version : 1.0.1

# Modifications : Modified the Printing method and added a few comments

# Description : This will scan the current directory and all subdirectories and display the size.

import os

import sys # Load the library module and the sys module for the argument vector'''

try:

directory = sys.argv[1] # Set the variable directory to be the argument supplied by user.

except IndexError:

sys.exit("Must provide an argument.")

dir_size = 0 # Set the size to 0

fsizedicr = {'Bytes': 1,

'Kilobytes': float(1) / 1024,

'Megabytes': float(1) / (1024 * 1024),

'Gigabytes': float(1) / (1024 * 1024 * 1024)}

for (path, dirs, files) in os.walk(directory): # Walk through all the directories. For each iteration, os.walk returns the folders, subfolders and files in the dir.

for file in files: # Get all the files

filename = os.path.join(path, file)

dir_size += os.path.getsize(filename) # Add the size of each file in the root dir to get the total size.

fsizeList = [str(round(fsizedicr[key] * dir_size, 2)) + " " + key for key in fsizedicr] # List of units

if dir_size == 0: print ("File Empty") # Sanity check to eliminate corner-case of empty file.

else:

for units in sorted(fsizeList)[::-1]: # Reverse sort list of units so smallest magnitude units print first.

print ("Folder Size: " + units)