3 Python functions

I have multiple network interfaces with different internet connections. I need a python library to: - List all of my interfaces that can be routed to internet - Select an network interface and send an email (through SMTP + SSL OR TLS) with the configured interface. The library must contain a YAML configuration file to: - Input the smtp address - Input the smtp port - Input the user email address - Input the user password - Optionally the list of the interfaces that can be routed to the internet if they are not detected automatically The deliverable is 3 functions with the following prototypes: def get_interfaces_list() -> that returns a list/table of the interfaces list (containing at least the interface unique name or identifier). def is_interface_available(interface) -> returning True if the interface is available AND routed to the internet. def send_email(interface, recipient, subject, body, attachment=None) -> sends email through the interface, body can be HTML or Text content, attachment is a list of file path. The library must work with the following operating systems: - Windows 7 and above - Linux Debian Jessie / Ubuntu LTS It is possible to re-use existing libraries, as long as it respect the conditions above. I am expecting a minimum documentation of the code. Contact me if you have any question!