root@a11:~# python3
Python 3.6.3 (default, Oct  3 2017, 21:45:48) 
[GCC 7.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from cloudinit import stages
>>> aaa = stages._pkl_load('/var/lib/cloud/instances/a11/obj.pkl')
>>> aaa
<cloudinit.sources.DataSourceNoCloud.DataSourceNoCloud object at 0x7ff7e03d7e80>

>>> aaa.userdata_raw
b'#cloud-config\n{}\n\n'
>>> aaa_vendordata_raw
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NameError: name 'aaa_vendordata_raw' is not defined
>>> aaa.vendordata_raw
b'#cloud-config\n{}\n\n'