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> > Below is the full output. > > ######################################### > root@localhost:~/linux# ./tools/net/ynl/pyynl/cli.py --spec Documentation/netlink/specs/ethtool.yaml --do rings-get --json '{"header":{"dev-index": 18}}' > File "./tools/net/ynl/pyynl/cli.py", line 23 > raise Exception(f"Schema directory {schema_dir} does not exist") > ^ > SyntaxError: invalid syntax > ################################# Is that an old python that doesn't have f-string support, or something? Can you tell us the python version you are using?