def fmcapi_post_bulk(fmc, post_data):
    # Bulk POST of network groups
    api_path = '/object/networkgroups?bulk=true'
    post_resp = fmc.send_to_api(method='post', url=fmc.configuration_url+api_path, json_data=post_data)

    return post_resp

with FMC(**myfmc) as fmc1:
	bulk_post = []

	objgrp1 = NetworkGroups(fmc1, name='TEST-objgrp1', dry_run=True)
	objgrp1.unnamed_networks(action='add', value='10.10.10.0/24')
	objgrp1.named_networks(action='add', name='PYTHON-TEST-NET')
	objgrp1.named_networks(action='addgroup', name='PYTON-TEST-GRP')
	bulk_post.append(objgrp1.format_data())

	objgrp2 = NetworkGroups(fmc1, name='TEST-objgrp2', dry_run=True)
	objgrp2.unnamed_networks(action='add', value='1.1.1.1')
	objgrp2.unnamed_networks(action='add', value='2.2.2.2')
	bulk_post.append(objgrp2.format_data())

	post_resp = fmcapi_post_bulk(fmc1, bulk_post)