BES Archiver Utility (Example for using python-besapi), will create a full BES file console export at the current working directory.

BESArchiver.py

#!/usr/bin/env python
#
# Copyright 2014 The Pennsylvania State University.
#
"""
BESArchiver.py

Created by Matt Hansen (mah60@psu.edu) on 2014-05-27.

Easily export content using the BES (BigFix) REST API
"""
import os
import string
import besapi

from ConfigParser import SafeConfigParser

"""

# Example file contents of besapi.conf
# Place at /etc/besapi.conf, ~/besapi.conf or ./besapi.conf

[besapi]
BES_ROOT_SERVER = https://your.bes.rootserver.org:52311
BES_USER_NAME = YOUR_USERNAME_HERE
BES_PASSWORD = YOUR_PASSWORD_HERE

[besarchiver]
VERBOSE = False
"""

# Sanitize Text
def sani_txt(*args):
    """ Clean arbitrary text for safe file system usage."""
    valid_chars = "-_.() %s%s" % (string.ascii_letters, string.digits)

    sani_args = []
    for arg in args:
        sani_args.append(''.join(c for c in
                                 str(arg).replace('/', '-')
                                 if c in valid_chars))

    return tuple(sani_args)

# Read Config File
CONFPARSER = SafeConfigParser({'VERBOSE': 'True'})
CONFPARSER.read(['/etc/besapi.conf',
                 os.path.expanduser('~/besapi.conf'),
                 'besapi.conf'])

BES_ROOT_SERVER = CONFPARSER.get('besapi', 'BES_ROOT_SERVER')
BES_USER_NAME = CONFPARSER.get('besapi', 'BES_USER_NAME')
BES_PASSWORD = CONFPARSER.get('besapi', 'BES_PASSWORD')

if 'besarchiver' in CONFPARSER.sections():
    VERBOSE = CONFPARSER.getboolean('besarchiver', 'VERBOSE')
else:
    VERBOSE = True

# Create API Connection
B = besapi.BESConnection(BES_USER_NAME, BES_PASSWORD, BES_ROOT_SERVER)

# Iterate Over All Sites
for site in B.get('sites').besobj.iterchildren():
    resource = site.attrib['Resource'].replace('http://', 'https://')

    # Iterate Over All Site Content
    content = B.get(resource + '/content')
    if content.request.status_code == 200:
        print "Archiving %d items from %s..." % (
            content().countchildren(), site.Name)

        for task in content().iterchildren():
            if VERBOSE:
                print "{%s} (%s) [%s] %s - %s    " % (
                    site.Name,
                    task.tag,
                    task.ID,
                    task.Name.text.encode("ascii", "ignore"),
                    task.attrib['LastModified'])

            # Get Specific Content
            content = B.get(task.attrib['Resource'].replace(
                'http://', 'https://'))

            # Write Content to Disk
            if content:
                if not os.path.exists("%s/%s" % sani_txt(site.Name, task.tag)):
                    os.makedirs("%s/%s" % sani_txt(site.Name, task.tag))

                with open("%s/%s/%s - %s.bes" %
                          sani_txt(site.Name,
                                   task.tag,
                                   task.ID,
                                   task.Name.text.encode("ascii", "ignore"))
                          , "wb") as bes_file:
                    bes_file.write(content.text.encode('utf-8'))

This functionality has been moved into BESAPI wrapper itself: https://github.com/jgstew/besapi/blob/master/src/besapi/besapi.py#L642-L656