Generate a Signed URL that Expires (Python)

gistfile1.py

import boto
import boto.s3.connection
access_key = ''
secret_key = ''

conn = boto.connect_s3(
        aws_access_key_id = access_key,
        aws_secret_access_key = secret_key,
        #is_secure=False,               # uncomment if you are not using ssl
        calling_format = boto.s3.connection.OrdinaryCallingFormat(),
        )

bucket = conn.get_bucket('grubhub-example-bucket')

apk_file = bucket.get_key('/path/to/filename.txt')
# expires_in is epoch time
apk_file_url = apk_file.generate_url(expires_in=1738254231, expires_in_absolute=1, query_auth=True, force_http=True)
print apk_file_url