Python: check whether a network interface is up

Question

In Python, is there a way to detect whether a given network interface is up?

In my script, the user specifies a network interface,

Answer 1

With pyroute2.IPRoute:

from pyroute2 import IPRoute
ip = IPRoute()
state = ip.get_links(ip.link_lookup(ifname='em1'))[0].get_attr('IFLA_OPERSTATE')
ip.close()

With pyroute2.IPDB:

from pyroute2 import IPDB
ip = IPDB()
state = ip.interfaces.em1.operstate
ip.release()