Python 跳过依赖于失败规则的蛇形规则

这是我的snakemake个工作流程中的一个部分:

对于某些数据集，规则bagel2bf偶尔会失败，但我不希望它在整个snakemake次运行中失败.

我如何调整工作流，以便如果规则bagel2bf中有退出代码1，它将跳过依赖于其输出的规则(可能还会打印一条警告消息)？

以下是规则的代码:

rule install_bagel2:
    output:
        directory("bagel2_software/"),
    shell:
        "git clone https://github.com/hart-lab/bagel.git {output}"
    

rule convert_count_table:
    input:
        "count/counts-aggregated.tsv"
    output:
        "count/counts-aggregated-bagel2.tsv"
    params:
        fa=fasta,
    resources:
        runtime=config["resources"]["stats"]["time"]
    conda:
        "envs/stats.yaml"
    script:
        "scripts/convert_count_table.py"


rule bagel2fc:
    input:
        "bagel2_software/",
        "count/counts-aggregated-bagel2.tsv",
    output:
        "bagel2/{bcomparison}/{bcomparison}.foldchange"
    resources:
        runtime=config["resources"]["stats"]["time"]
    conda:
        "envs/stats.yaml"
    log:
        "logs/bagel2/fc/{bcomparison}.log"
    script:
        "scripts/bagel2fc.py"


rule bagel2bf:
    input:
        "bagel2_software/",
        "bagel2/{bcomparison}/{bcomparison}.foldchange",
    output:
        "bagel2/{bcomparison}/{bcomparison}.bf"
    params:
        species=config["lib_info"][library]["species"],
    resources:
        runtime=config["resources"]["stats"]["time"]
    conda:
        "envs/stats.yaml"
    log:
        "logs/bagel2/bf_{bcomparison}.log"
    script:
        "scripts/bagel2bf.py"


rule bagel2pr:
    input:
        "bagel2_software/",
        "bagel2/{bcomparison}/{bcomparison}.bf",
    output:
        report("bagel2/{bcomparison}/{bcomparison}.pr", caption="report/bagel2.rst", category="BAGEL2")
    params:
        species=config["lib_info"][library]["species"]
    resources:
        runtime=config["resources"]["stats"]["time"]
    conda:
        "envs/stats.yaml"
    log:
        "logs/bagel2/pr_{bcomparison}.log"
    script:
        "scripts/bagel2pr.py"


rule plot_bf:
    input:
        "bagel2/{bcomparison}/{bcomparison}.bf"
    output:
        report("bagel2_plots/{bcomparison}/{bcomparison}.bf.pdf", caption="report/bagel2_plots.rst", category="BAGEL2 plots", subcategory="{bcomparison}", labels={"Comparison":"{bcomparison}", "Figure":"BF plot"})
    conda:
        "envs/stats.yaml"
    script:
        "scripts/plot_bf.py"


rule plot_pr:
    input:
        "bagel2/{bcomparison}/{bcomparison}.pr"
    output:
        report("bagel2_plots/{bcomparison}/{bcomparison}.pr.pdf", caption="report/bagel2_plots.rst", category="BAGEL2 plots", subcategory="{bcomparison}", labels={"Comparison":"{bcomparison}", "Figure":"Precision-recall plot"})
    conda:
        "envs/stats.yaml"
    script:
        "scripts/plot_pr.py"