Get Office version that last saved the file

offver.py

import re
import sys

versions = {
    0x00: 'Excel 97',
    0x01: 'Excel 2000',
    0x02: 'Excel 2002',
    0x03: 'Office Excel 2003',
    0x04: 'Office Excel 2007',
    0x06: 'Excel 2010',
    0x07: 'Excel 2013',
    0x08: 'Excel 2016 (or higher)'
    }

if(len(sys.argv) != 2):
    print " Usage: %s <file>" % sys.argv[0]
    sys.exit(1)

with open(sys.argv[1], 'rb') as f:
    content = f.read()

if(content[0:4] != '\xD0\xCF\x11\xE0'):
    print "File is not an MS-XLS (CDF) file"
    sys.exit(1)

m = re.search(b'\xCD\x07[\x00-\xff]{3}\x00\x06([\x00-\xff])\x00\x00', content)
if m is None:
    print "No version info found"
    sys.exit(1)

v = ord(m.group(1))
print "Version: %s" % versions.get(v, 'Unknown (0x%02x)' % v)