from ansys.edb.core.database import Database
from ansys.edb.core.layout.cell import Cell
from ansys.edb.core.session import session

ANSYS_EM_ROOT = r"C:\Program Files\AnsysEM\v252\Win64"
EDB_PATH = r"C:\Users\jlin\Documents\Ansoft\Kame_MB.aedb"
with session(ANSYS_EM_ROOT, 50051):
    try:
        db = Database.open(EDB_PATH, False)
        cell: Cell = db.circuit_cells[0]
        layout = cell.layout
        for net in layout.nets:
            en = net.extended_net
            if en is not None:
                print(f"Net {net.name} belongs to the extended net {en.name}")
    except Exception as e:
        raise e
    finally:
        db.close()