filesystem of file

## Identify from the path of file to which filesystem it belongs

#!/usr/bin/python
from subprocess import Popen, PIPE
from sys import exit
import os

'''
Creating empty lists for usage in code.
'''

filesystemlist = []
filesystemlist1 = []
filenamebreak = []

'''
Capturing the filesytem information in a list and returning that list to call function breaking in
another variable.
'''

filesysteminfo = Popen(['df','-h'], stdout=PIPE)
filesysteminfo.wait()

def filesystemslist():
    if filesysteminfo.returncode is 0:
        for eachrow in iter(filesysteminfo.stdout.readline, b''):
             filesystems = eachrow.split()[-1]
             if filesystems.startswith("/"):
                 filesystemlist.append(filesystems)
        return filesystemlist

'''
Sorting the returned filesystem list according to length of each element of list in descending order.
using while loop to dis-associate the filepath and then looking for the path in filesystem list.
'''

def breaking(filename):
    filesystemlist1 = filesystemslist()
    filesystemlist1.sort(key=len,reverse=True)
    filenamebreak.append(filename)
    while filename != "/":
        filename = os.path.split(filename)[0]
        filenamebreak.append(filename)
    for i in filenamebreak:
        if i in filesystemlist1:
            print "***{}***".format(i)
            print "File present in {} filesystem".format(i)
            break

'''
Input provide the filename and calling breaking function.
'''

filename = raw_input ("Enter the full name of file : ")
if filename.startswith("/"):
    print "File name is valid"
    print "Searching the name of filesystem in which file is present"
    breaking(filename)
else:
    print "File name is not valid"
    exit(2)