pyvbox: set attachment type of network adapter for VirtualBox machine to "host_only"

pyvbox: How to set the attachment_type of a network adapter.py

"""pyvbox:How to set the attachment_type of a network adapter.
"""

import virtualbox
from virtualbox.library import NetworkAttachmentType

# Option 1
vbox = virtualbox.VirtualBox()
machine = vbox.find_machine('test_vm')
session = machine.create_session()
adapter = session.machine.get_network_adapter(0)
adapter.attachment_type = NetworkAttachmentType.host_only
session.machine.save_settings()
session.unlock_machine()

# Option 2
vbox = virtualbox.VirtualBox()
machine = vbox.find_machine('test_vm')
with machine.create_session() as session:
    adapter = session.machine.get_network_adapter(0)
    adapter.attachment_type = NetworkAttachmentType.host_only
    session.machine.save_settings()