Dynamic rule for snakemake

rule_maker.py

def mk_rule(in_file, out_file, tmp_snake='tmp_snake.py'):
    '''input is single file
       output is single file
    '''
    with open(tmp_snake, 'w') as f:
        rule_str = f"""rule auto:
    input:
        '{in_file}'
    output:
        '{out_file}'
    shell:
        'touch {{output}}'"""
        print(rule_str, file=f)
    return tmp_snake