How to use the autonetkit.ank.copy_int_attr_from function in autonetkit

# trim out non-used values

    g_phy = anm["phy"]
    r1_phy = g_phy.node("r1")

    r1_phy_lo100 = r1_phy.add_interface(
        "Loopback100", id="Loopback100", category="logical")

    for iface in r1_phy.interfaces():
        print iface.dump()

    g_phy_live = anm.add_overlay("phy_live", multi_edge=True)
    g_phy_live.add_nodes_from(anm['phy'])
    g_phy_live.add_edges_from(anm['phy'].edges())
    g_phy_live.data.paths = []  # to store paths onto
    ank_utils.copy_int_attr_from(anm['phy'], anm['phy_live'], "id")

    for overlay_id in ("ospf_live", "eigrp_live", "rip_live", "isis_live"):
        g_overlay = anm.add_overlay(
            overlay_id, directed=True, multi_edge=True)
        g_overlay.add_nodes_from(anm['phy'])

    for overlay_id in ("ibgp_v4_live", "ebgp_v4_live"):
        g_overlay = anm.add_overlay(overlay_id, directed=True,)
        g_overlay.add_nodes_from(anm['phy'])

    print anm.overlays()

    g_ospf_live = anm["ospf_live"]
    print g_ospf_live.nodes()
    r1_ospf = g_ospf_live.node("r1")
    r2_ospf = g_ospf_live.node("r2")

def test_copy_int_attr_from(self):
        anm = autonetkit.topos.house()
        g_in = anm['input']
        g_phy = anm['phy']
        result = [iface.get('ospf_cost') for node in g_phy for iface in node]
        expected_result = [None, None, None, None, None, None, None, None,
                           None, None, None, None]
        self.assertListEqual(expected_result, result)
        for node in g_in:
            for interface in node:
                interface.set('ospf_cost', 10)
        ank_utils.copy_int_attr_from(g_in, g_phy, "ospf_cost")
        result = [iface.get('ospf_cost') for node in g_phy for iface in node]
        expected_result = [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10]
        self.assertListEqual(expected_result, result)

def build_ebgp(anm):
    g_l3 = anm['layer3']

    g_ebgp = anm.add_overlay("ebgp", directed=True)

    g_ebgp.add_nodes_from(g_l3.routers())
    ank_utils.copy_int_attr_from(g_l3, g_ebgp, "multipoint")

    ebgp_edges = [e for e in g_l3.edges() if e.src.asn != e.dst.asn]
    g_ebgp.add_edges_from(ebgp_edges, bidirectional=True, type='ebgp')

def build_ebgp(anm):
    g_l3 = anm['layer3']

    g_ebgp = anm.add_overlay("ebgp", directed=True)

    g_ebgp.add_nodes_from(g_l3.routers())
    ank_utils.copy_int_attr_from(g_l3, g_ebgp, "multipoint")

    ebgp_edges = [e for e in g_l3.edges() if e.src.asn != e.dst.asn]
    g_ebgp.add_edges_from(ebgp_edges, bidirectional=True, type='ebgp')

g_l3 = anm['layer3']
    g_phy = anm['phy']
    # add regardless, so allows quick check of node in anm['ospf'] in compilers
    g_ospf = anm.add_overlay("ospf")
    if not anm['phy'].data.enable_routing:
        g_ospf.log.info("Routing disabled, not configuring OSPF")
        return

    if not any(n.igp == "ospf" for n in g_phy):
        g_ospf.log.debug("No OSPF nodes")
        return

    ospf_nodes = [n for n in g_l3 if n['phy'].igp == "ospf"]
    g_ospf.add_nodes_from(ospf_nodes)
    g_ospf.add_edges_from(g_l3.edges(), warn=False)
    ank_utils.copy_int_attr_from(g_l3, g_ospf, "multipoint")

    # TODO: work out why this doesnt work
    # ank_utils.copy_int_attr_from(g_in, g_ospf, "ospf_cost", dst_attr="cost",  type=int, default = 1)
    for node in g_ospf:
        for interface in node.interfaces():
            interface.cost = 1
        '''Sharad: Will there be any errors if we use the above loop instead of the 2 loops below
        for interface in node.physical_interfaces():
            interface.cost = 1
        for interface in node.portchannel_interfaces():
            interface.cost = 1
        '''

    ank_utils.copy_attr_from(g_in, g_ospf, "ospf_area", dst_attr="area")
    # ank_utils.copy_edge_attr_from(g_in, g_ospf, "ospf_cost", dst_attr="cost",  type=int, default = 1)
    ank_utils.copy_attr_from(

g_l3 = anm['layer3']
    g_phy = anm['phy']
    g_isis = anm.add_overlay("isis")

    if not anm['phy'].data.enable_routing:
        g_isis.log.info("Routing disabled, not configuring ISIS")
        return

    if not any(n.igp == "isis" for n in g_phy):
        g_isis.log.debug("No ISIS nodes")
        return

    isis_nodes = [n for n in g_l3 if n['phy'].igp == "isis"]
    g_isis.add_nodes_from(isis_nodes)
    g_isis.add_edges_from(g_l3.edges(), warn=False)
    ank_utils.copy_int_attr_from(g_l3, g_isis, "multipoint")

    ank_utils.copy_attr_from(
        g_in, g_isis, "custom_config_isis", dst_attr="custom_config")

    g_isis.remove_edges_from(
        [link for link in g_isis.edges() if link.src.asn != link.dst.asn])

    build_network_entity_title(anm)

    for node in g_isis.routers():
        node.process_id = node.asn

    for link in g_isis.edges():
        link.metric = 1  # default

    for edge in g_isis.edges():

g_l3 = anm['layer3']
    g_phy = anm['phy']
    g_isis = anm.add_overlay("isis")

    if not anm['phy'].data.enable_routing:
        g_isis.log.info("Routing disabled, not configuring ISIS")
        return

    if not any(n.igp == "isis" for n in g_phy):
        g_isis.log.debug("No ISIS nodes")
        return

    isis_nodes = [n for n in g_l3 if n['phy'].igp == "isis"]
    g_isis.add_nodes_from(isis_nodes)
    g_isis.add_edges_from(g_l3.edges(), warn=False)
    ank_utils.copy_int_attr_from(g_l3, g_isis, "multipoint")

    ank_utils.copy_attr_from(
        g_in, g_isis, "custom_config_isis", dst_attr="custom_config")

    g_isis.remove_edges_from(
        [link for link in g_isis.edges() if link.src.asn != link.dst.asn])

    build_network_entity_title(anm)

    for node in g_isis.routers():
        node.process_id = node.asn

    for link in g_isis.edges():
        link.metric = 1  # default

    for edge in g_isis.edges():

g_l3 = anm['layer3']
    g_phy = anm['phy']
    # add regardless, so allows quick check of node in anm['ospf'] in compilers
    g_ospf = anm.add_overlay("ospf")
    if not anm['phy'].data.enable_routing:
        g_ospf.log.info("Routing disabled, not configuring OSPF")
        return

    if not any(n.igp == "ospf" for n in g_phy):
        g_ospf.log.debug("No OSPF nodes")
        return

    ospf_nodes = [n for n in g_l3 if n['phy'].igp == "ospf"]
    g_ospf.add_nodes_from(ospf_nodes)
    g_ospf.add_edges_from(g_l3.edges(), warn=False)
    ank_utils.copy_int_attr_from(g_l3, g_ospf, "multipoint")

    # TODO: work out why this doesnt work
    #ank_utils.copy_int_attr_from(g_in, g_ospf, "ospf_cost", dst_attr="cost",  type=int, default = 1)
    for node in g_ospf:
        for interface in node.physical_interfaces():
            interface.cost = 1

    ank_utils.copy_attr_from(g_in, g_ospf, "ospf_area", dst_attr="area")
    #ank_utils.copy_edge_attr_from(g_in, g_ospf, "ospf_cost", dst_attr="cost",  type=int, default = 1)
    ank_utils.copy_attr_from(
        g_in, g_ospf, "custom_config_ospf", dst_attr="custom_config")

    g_ospf.remove_edges_from([link for link in g_ospf.edges(
    ) if link.src.asn != link.dst.asn])  # remove inter-AS links

    area_zero_ip = netaddr.IPAddress("0.0.0.0")