Undeclared section threads warning should not be shown here

[iromeo]

rule a:
    input:
        "test.in"
    output:
        "test.out"
    run:
        with open(output[0], "w") as f:
            print(threads, file=f)

code works ok in 8.20.6, threads will be 1 by default here

[iromeo]

And similar for:

rule a:
    input:
        "test.in"
    output:
        "test.out"
    run:
        with open(input[0]) as f:
            with open(output[0], "w") as out:
                print(resources.slurm_extra, file=out)