import os NETBOX_URL = str(os.getenv("NETBOX_URL")) NETBOX_TOKEN = str(os.getenv("NETBOX_TOKEN")) MANDATORY_ENV_VARS = ["NETBOX_URL", "NETBOX_TOKEN"] for var in MANDATORY_ENV_VARS: if var not in os.environ: raise EnvironmentError("Failed because {} is not set.".format(var))