parse_lsblk_output.py

(venv) di-erz@worklap:~$ ipython
Python 3.6.1 (default, Apr 22 2017, 20:17:23) 
Type 'copyright', 'credits' or 'license' for more information
IPython 6.0.0 -- An enhanced Interactive Python. Type '?' for help.

In [1]: import re

In [2]: lsblk = list(re.finditer(
   ...: r'NAME=\"(?P<name>[\w|\d]+?)\" SIZE=\"(?P<size>[\w|\d]+?)\" TYPE=\"(?P<type>[\w|\d]+?)\"', 
   ...: 'NAME="sda" SIZE="20G" TYPE="disk"\nNAME="sda1" SIZE="19G" TYPE="part"\nNAME="sda2" SIZE="1K" TYPE="part"\nNAME="sda5" SIZE="1022M" TYPE="part"\nNAME="sr0" 
   ...: SIZE="1024M" TYPE="rom"\n'))

In [3]: for blk in lsblk:
   ...:     print(blk.groupdict())
   ...:     
{'name': 'sda', 'size': '20G', 'type': 'disk'}
{'name': 'sda1', 'size': '19G', 'type': 'part'}
{'name': 'sda2', 'size': '1K', 'type': 'part'}
{'name': 'sda5', 'size': '1022M', 'type': 'part'}
{'name': 'sr0', 'size': '1024M', 'type': 'rom'}