AWS Federated signin URL - Python

import urllib, json
import requests 
import boto3

client = boto3.client(
    service_name='sts',
    region_name='us-east-2',
    aws_access_key_id='ACCESS_KEY',
    aws_secret_access_key='SECRET_KEY'
)

assumed_role_object = client.get_federation_token(
    Name='kalki',
    Policy='{    "Version": "2012-10-17",    "Statement": [        {            "Effect": "Allow",            "Action": "*",            "Resource": "*"        }    ]}',
    DurationSeconds=43200
)

assumed_role_object = client.get_session_token(
    DurationSeconds=43200
)

assumed_role_object = client.assume_role(
    RoleArn="arn:aws:iam::063705058639:role/tempfedrole",
    RoleSessionName="AssumeRoleSession",
    DurationSeconds=3600
)

json_string_with_temp_credentials = '{"sessionId":"' + assumed_role_object["Credentials"]["AccessKeyId"] + '","sessionKey":"' + assumed_role_object["Credentials"]["SecretAccessKey"] + '","sessionToken":"' + assumed_role_object["Credentials"]["SessionToken"] + '"}'

request_parameters = "?Action=getSigninToken&SessionDuration=43200&Session=" + urllib.quote_plus(json_string_with_temp_credentials)
request_url = "https://signin.aws.amazon.com/federation" + request_parameters
r = requests.get(request_url)
signin_token = json.loads(r.text)

request_parameters = "?Action=login&Issuer=Example.org&Destination=" + urllib.quote_plus("https://console.aws.amazon.com/") + "&SigninToken=" + signin_token["SigninToken"]
request_url = "https://signin.aws.amazon.com/federation" + request_parameters

print request_url