Fetch Script for Policies omitting vehicle registration number

gistfile1.txt

from django.db.models import Q

query = Q(quotation__vehicle__license_plate="") | Q(quotation__vehicle__license_plate=None)
POLICYS_IN_QUESTION = Policy.objects.filter(query)
f = open('cert-no-show-reg-number.txt', 'w')
for policy in POLICYS_IN_QUESTION:
    f.write("== {} ==\n".format(policy.policy_number))
    try:
        quotation_vehicle = policy.quotation.vehicle
        risk_vehicle = policy.risk.vehicle
        f.write("--Quotation Vehicle Information--\n"
                "Registration Number: {}\n"
                "VIN: {}\n".format(quotation_vehicle.license_plate, quotation_vehicle.vin))
        f.write("--Risk (Policy) Vehicle Information--\n"
                "Registration Number: {}\n"
                "VIN: {}\n".format(risk_vehicle.license_plate, risk_vehicle.vin))
    except Policy.quotation.RelatedObjectDoesNotExist as e:
        print "Policy in question doesn't have a quotation :/ Strange"

f.write('== END ==')
f.close()