python-twilio

Free SMS Using Twilio and Python

1. Setup Twilio Account

Go to the Twilio site and get register yourself. https://www.twilio.com/

2. Once you get registered, verify your Email ID.

3. Once your email id gets verified, you need to add and verify your mobile number. (You will receive the OTP)

4. After mobile and email verification fill in the basic information.

5. Twilio provides a virtual mobile number to send the SMS for the free account. You need to click on the (Get Virtual Phone Number) button.

6. Grab the Account SID, Account Token, and Twilio Virtual Phone Number.

Account SID is a security identifier.
Account Token used to access the API

7. For the trail/free version, you can only send messages to verified caller ids.

Integrating Twilio API using Python

1. Create/Setup a Python virtual environment

# install the virtual environment
>>> pip3 install -U virtualenv
>>> mkdir python-twilio-sender
>>> cd python-twilio-sender
>>> virtualenv venv
# activate the virtual environment
>>> source venv/bin/activate
(venv) prompt$

2. Install twilio python library/SDK

https://www.twilio.com/docs/libraries/python#install-the-library

>>> pip3 install twilio

3. Simple code snippet to send the SMS

from twilio.rest import Client
# Your Account SID from twilio.com/console
account_sid = "<account_sid>"
# Your Auth Token from twilio.com/console
auth_token  = "your_auth_token"
client = Client(account_sid, auth_token)
message = client.messages.create(
    to="+15558675309", 
    from_="+15017250604",
    body="Hello from Python!")
print(message.sid)

4. Complete API document https://www.twilio.com/docs/sms/quickstart/python

Notes :

A) Auth token and Account SID must be sorted in the OS.

Reference: https://docs.python.org/3/library/os.html#os.environ

B) For the trial version “to” number must be first verified.