text: # Download the Python helper library from twilio.com/docs/python/install
  import os
  from twilio.rest import Client
  from datetime import date
  
  # Your Account Sid and Auth Token from twilio.com/user/account
  # To set up environmental variables, see http://twil.io/secure
  account_sid = os.environ['TWILIO_ACCOUNT_SID']
  auth_token = os.environ['TWILIO_AUTH_TOKEN']
  client = Client(account_sid, auth_token)
  
  # A list of call objects with the properties described above
  calls = client.calls.list(
      status="completed", start_time_after=date(2009, 7, 6)
  )
  
  for call in calls:
      print(call.to)
  