Hi in my code there is a dictionary of dictionary.
nrec={\'bridge\': \'xapi1\', \'current_operations\': {}, \'uuid\': \'9ae5ca7d-e7d6-7a81-f619-d0ea33efb534\', \
Try this:
nrec["other_config"].get('is_guest_installer_network')
It'll return its value if 'is_guest_installer_network' exists in nrec['other_config']
'is_guest_installer_network'
nrec['other_config']