def launch_lab(lab_id, lab_map_config): if lab_id in lab_map_config: lab_file = lab_map_config[lab_id] # e.g., "ospf_stub.gns3" subprocess.Popen(["gns3", lab_file]) else: print(f"No topology file mapped for lab lab_id")

It looks like you’re asking to related to Rene Molenaar’s CCNP PDF 123 — possibly from his GNS3Vault or NetworkLessons content.