I have developed one module to use way2sms api to send SMS.

But problem is that, in way2sms we can send only 100 SMS per day.

So its good to use 

twilio 

Its a good one but subscriptions charges are must... :)

I think your prob is solved.

import urllib2

import cookielib

from getpass import getpass

import sys

username = raw_input("Enter your login Username: ")

passwd = getpass()

message = raw_input("Enter Message: ")

number = raw_input("Enter Mobile number:")

message = "+".join(message.split(' '))

# Logging into the SMS Site

url = 'http://site24.way2sms.com/Login1.action?'

data = 'username=' + username + '&password=' + passwd + '&Submit=Sign+in'

# For Cookies:

cj = cookielib.CookieJar()

opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj))

# Adding Header detail:

opener.addheaders = [('User-Agent', 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.120 Safari/537.36')]

try:

usock = opener.open(url, data)

except IOError:

print "Error while logging in."

sys.exit(1)

jession_id = str(cj).split('~')[1].split(' ')[0]

send_sms_url = 'http://site24.way2sms.com/smstoss.action?'

send_sms_data = 'ssaction=ss&Token=' + jession_id + '&mobile=' + number + '&message=' + message + '&msgLen=136'

opener.addheaders = [('Referer', 'http://site25.way2sms.com/sendSMS?Token=' + jession_id)]

try:

sms_sent_page = opener.open(send_sms_url, send_sms_data)

except IOError:

print "Error while sending message"

sys.exit(1)

print "SMS has been sent."