Uncompress and Unpickle a compressed PickledObjectField

convert.py

import pickle
from base64 import b64decode
from zlib import decompress
import xml.dom.minidom

def parse_pickled_transcript(value):
    value = value.encode()
    value = b64decode(value)
    value = decompress(value)
    result = pickle.loads(value)
    xml = xml.dom.minidom.parseString(result)
    xml_string = xml.toprettyxml()
    xml_file = open("output.xml", "w")
    xml_file.write(xml_string)
    xml_file.close()