代码更改后Snakemake中的MissingRuleException

Question

我有这两条规则：

all_participants = ['01','03','04','05','06','07','08']
rule all:
    input: expand("data/interim/tables/screen/p{participant_id}.csv",participant_id=all_participants)

rule extract_screen_table:
    output: "data/interim/tables/screen/p{participant_id}.csv"
    shell: "python src/data/sql_table_to_csv.py --table screen"

如果我执行snakemake一切正常，但如果我更改代码并执行：snakemake -n -R 'snakemake --list-code-changes'我收到此错误：

Building DAG of jobs...
MissingRuleException:
No rule to produce snakemake --list-code-changes (if you use input functions make sure that they don't raise unexpected exceptions).

snakemake --list-code-change的输出是：

Building DAG of jobs...
data/interim/tables/screen/p03.csv

我认为它不应该，而且我应该得到python脚本。

Answer 1

您必须使用反引号进行列表代码更改：`snakemake --list-code-changes`。这是用于执行包含命令的bash语法，并将STDOUT作为字符串返回。