AWS - Python - Pre Sign S3 key

pre-sign.py

# coding: utf-8
# Usage: python pre-sign.py -h
########################################
import boto3
import datetime
import sys, getopt
from botocore.client import Config

expiration = 93200

try:
   opts, args = getopt.getopt(sys.argv[1:],"hu:e:",["url=","exp="])
except getopt.GetoptError:
   print sys.argv[0] + ' -u s3:// [-e <expiration_seconds>]'
   sys.exit(2)
for opt, arg in opts:
   if opt == '-h':
      print sys.argv[0] + ' -u s3:// [-e <expiration_seconds>]'
      sys.exit()
   elif opt in ("-u", "--url"):
      s3_url = arg
   elif opt in ("-e", "--exp"):
      expiration = arg

session = boto3.Session(profile_name="",region_name="eu-central-1")
s3 = session.client('s3',region_name="eu-central-1",config=Config(signature_version='s3v4'))
s3_object=s3_url
s3_bucket=s3_object.split("/")[2]
s3_key="/".join(s3_object.split("/")[3:])

print(" Generating pre-signed url...")
print(s3.generate_presigned_url('get_object', Params={'Bucket':s3_bucket,'Key':s3_key}, ExpiresIn=expiration))
now = datetime.datetime.now()
now = now + datetime.timedelta(0, 172800)

print("Expires in %s" % (now))