If you want to see doctrings in action, take a look at Salt (https://saltproject.io/). They’re used to build all the module documentation (https://docs.saltproject.io/en/latest/py-modindex.html) using sphinx and they won’t accept new modules without them.

• Firewalls: Fortinet, Juniper
• Route/Switch: Juniper
• Wireless: God please no
• Auth: FreeRADIUS
• Monitoring: Zabbix
• Automation: Salt
• SDWAN: Fortinet