snippet.py

    dev_map = boto.ec2.blockdevicemapping.BlockDeviceMapping()
    block = boto.ec2.blockdevicemapping.EBSBlockDeviceType()
    block.snapshot_id = snapshot.id
    block.size = 40
    block.volume_type = 'gp2'
    dev_map[ROOT_DEV] = block

    swap = boto.ec2.blockdevicemapping.BlockDeviceType()
    swap.ephemeral_name = 'ephemeral0'
    dev_map[SWAP_DEV] = swap

    new_img = conn.register_image(name=SERVER,
                                  description=SERVER,
                                  architecture=ARCH,
                                  virtualization_type=VIRT,
                                  root_device_name=ROOT_DEV,
                                  block_device_map=dev_map)

    img = conn.get_image(new_img)
    status = img.update()
    while status == u'pending':
        time.sleep(7)
        status = img.update()
    if status == u'available':
        print 'image created'
    else:
        print "image status: %s" % status
        return

    server = conn.run_instances(img.id,
                                instance_type=INSTANCE_TYPE,
                                key_name=KEYPAIR,
                                placement=ZONE,
                                block_device_map=dev_map).instances[0]