'phone_numbers' resource unaccessible when using a subaccount via the master account about twilio-python

[TMcManus]

It turns out this is naming inconsistency.

from twilio.rest import TwilioRestClient

# To find these visit https://www.twilio.com/user/account
ACCOUNT_SID = "ACXXXXXXXXXX"
AUTH_TOKEN = "YYYYYYYYYYY"
SUBACCOUNT_SID = "ACZZZZZZZZZZ"

client = TwilioRestClient(ACCOUNT_SID, AUTH_TOKEN)

if SUBACCOUNT_SID:
    account = client.accounts.get(SUBACCOUNT_SID)

# This does not work
#for number in account.phone_numbers.iter():
#    print number.sid

# This does work
for number in account.incoming_phone_numbers.iter():
    print number.sid

# This does not work
#for caller_id in account.caller_ids.iter():
#    print caller_id.sid

# This does work
for caller_id in account.outgoing_caller_ids.iter():
    print caller_id.sid