how to compare the checksums in a list corresponding to a file path with the file path in the operating system In Python?

how to compare the checksums in a list corresponding to a file path with the file path in the operating system In Python?

import os,sys,libxml2

files=[]
sha1s=[]

doc = libxml2.parseFile('files.xml')
for path in doc.xpathEval('//File/Path'):
  files.append(path.content)
for sha1 in doc.xpathEval('//File/Hash'):
  sha1s.append(sha1.content)

for entry in zip(files,sha1s):
  print entry

the files.xml contains

<Files>
    <File>
        <Path>usr/share/doc/dialog/samples/form1</Path>
        <Type>doc</Type>
        <Size>1222</Size>
        <Uid>0</Uid>
        <Gid>0</Gid>
        <Mode>0755</Mode>
        <Hash>49744d73e8667d0e353923c0241891d46ebb9032</Hash>
    </File>
    <File>
        <Path>usr/share/doc/dialog/samples/form3</Path>
        <Type>doc</Type>
        <Size>1294</Size>
        <Uid>0</Uid>
        <Gid>0&l开发者_运维问答t;/Gid>
        <Mode>0755</Mode>
        <Hash>f30277f73e468232c59a526baf3a5ce49519b959</Hash>
    </File>
</Files>

I need to compare the sha1 checksum in between tags corresponding to the file specified in between the tags, with the same file path in base Operating system.

import hashlib
import libxml2

doc = libxml2.parseFile('files.xml')
filePaths = ["/" + path.content for path in doc.xpathEval('//File/Path')]
xmlDigests = [hash.content for hash in doc.xpathEval('//File/Hash')]

for filePath, xmlDigest in zip(filePaths, xmlDigests):
    with open(filePath) as inFile:
        digester = hashlib.sha1()
        digester.update(inFile.read())
        fileDigest = digester.hexdigest()
        if xmlDigest != fileDigest:
            print "Mismatch for %s (XML: %s, FILESYSTEM: %s)" % (filePath,
                xmlDigest, fileDigest)