Inject some modules in Snakefile file resolve scope w/o import declaration, e.g. os, sys,..

[iromeo]

Here should be no unresolved os error:

os.environ["THRESHOLD"] = "1.0"

rule a:
    input:
        "test.in"
    output:
        "test.out"
    params:
        threshold=os.environ["THRESHOLD"]
    log:
        "logs/a.log"
    conda:
        "envs/software.yaml"
    shell:
        "echo {params.threshold} > {output}"

Suggested list: os, sys, Path