filepathsize.py

# #!/usr/bin/python
#Import necessary modules for program
import os
import json
import sys
#Test is given to ensure that input given at terminal is acceptable
try:
#Mount global variable given as an input with argv command
    mount = str(sys.argv[1])
except IndexError:
    print ("Give mount point as arugments")
    sys.exit()
#Populate dictionary with filesize and filename + path
data = dict()
#Using os.walk to generate filenames in the folder tree, taking the mount variable
for root, directories, filenames in os.walk(mount):
    for filename in filenames:
        #Setting filepath and filesize variables
        file_path = os.path.join(root,filename)
        file_size = os.path.getsize(file_path)
        #Updating data into dictionary
        data.update({file_path:file_size})
        #Converting output of dictionary to json and outputting this to the terminal
        j = json.dumps(data)
print (j)