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It will use netifaces to do it quickly if available. Then it will fallback on parsing the output of ifconfig / ip addr / ipconfig, as appropriate. Finally, it will fallback on socket.gethostbyname_ex, which can be slow. R s9Unexpected error discovering local network interfaces: %sN(RYt ImportErrorRRRORR*RLR:RDRdt ExceptionRRe(tsuppress_exceptionste((s=lib/python2.7/site-packages/jupyter_client/localinterfaces.pyR&Ís0       cCstS(s2return the IP addresses that point to this machine(R2(((s=lib/python2.7/site-packages/jupyter_client/localinterfaces.pyR6ûscCstS(sKreturn the IP addresses for this machine that are visible to other machines(R3(((s=lib/python2.7/site-packages/jupyter_client/localinterfaces.pyR5scCstS(s1return ip for localhost (almost always 127.0.0.1)(R/(((s=lib/python2.7/site-packages/jupyter_client/localinterfaces.pyRZscCs |tkS(s does `ip` point to this machine?(R2(R7((s=lib/python2.7/site-packages/jupyter_client/localinterfaces.pyt is_local_ip scCs |tkS(s#is `ip` a publicly visible address?(R3(R7((s=lib/python2.7/site-packages/jupyter_client/localinterfaces.pyt is_public_ips($t__doc__RtreR]RRRtwarningsRR2R3R/R RR%R)RgR*R8tcompilet IGNORECASER<RDRLRNRORYRdReRR&R6R5RZRjRk(((s=lib/python2.7/site-packages/jupyter_client/localinterfaces.pyts<           -