Identify Twilio SMS recipients who have STOP'd your number

stops.py

"""
See also: 
https://support.twilio.com/hc/en-us/articles/223134027-Twilio-support-for-STOP-BLOCK-and-CANCEL-SMS-STOP-filtering-
"""

# Download the Python helper library from twilio.com/docs/python/install
from twilio.rest import TwilioRestClient

# Your Account Sid and Auth Token from twilio.com/user/account
account_sid = "ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
auth_token  = "your_auth_token"
client = TwilioRestClient(account_sid, auth_token)

# A list of message objects with the properties described above
messages = client.messages.list(To='your_twilio_number')

STOP_KEYWORDS = ('STOP', 'STOPALL', 'UNSUBSCRIBE', 'CANCEL', 'END', 'QUIT')
stopped_numbers = [message.from_ for message in messages if message.body.upper() in STOP_KEYWORDS]

print(stopped_numbers)