Merge demo

#!/usr/bin/env python

import pprint

def merge(x,y):
    return dict(x, **y)

ebs_block_device = [{
  'device_name': "/dev/sdg",
  'volume_size': 5,
  'volume_type': "gp2",
  'delete_on_termination': False,
},
{
  'device_name': "/dev/sdh",
  'volume_size': 5,
  'volume_type': "gp2",
  'delete_on_termination': False,
}]

mount_point = ['/data','/home']

merged = [
  merge(x, {'mount_point': mount_point[index]})
    for index, x in enumerate(ebs_block_device)
]

pp = pprint.PrettyPrinter()
pp.pprint(merged)

# Output:
#
# [{'delete_on_termination': False,
#   'device_name': '/dev/sdg',
#   'mount_point': '/data',
#   'volume_size': 5,
#   'volume_type': 'gp2'},
#  {'delete_on_termination': False,
#   'device_name': '/dev/sdh',
#   'mount_point': '/home',
#   'volume_size': 5,
#   'volume_type': 'gp2'}]