Bug: formatting break code when: if, for, and long char in two functions

[Hocnonsense]

snakefmt cannot format this code:

if 1:

    rule a:
        input:
            a="a",
        run:
            for i in range(3):
                a = print(
                    "a",
                    "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
                )
                b = print(
                    print(
                        "sssssssssssssssssssssssssssssssssssssssssssssssss",
                        b="b"
                    )
                )

    rule b:
        shell:
            "echo 1"

However, when I delete a "s" in line 14 or add a comma in line 15, snakefmt will work well. What happened? Thanks

[mbhall88]

What do you mean by

snakefmt cannot format this code

Please be more specific and provided the version of snakefmt you are using and any error messages and output

[Hocnonsense]

I'm sorry.

I tried to make a demo snakefile with this codes:

if 1:

    rule a:
        input:
            a="a",
        run:
            for i in range(3):
                a = print(
                    "a",
                    "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
                )
                b = print(
                    print(
                        "sssssssssssssssssssssssssssssssssssssssssssssssss",
                        b="b"
                    )
                )

    rule b:
        shell:
            "echo 1"

and I ran snakemake like this:

$ snakefmt -V
snakefmt, version 0.8.4
$ snakefmt test.smk
[INFO] Writing formatted content to 2023/04/11.smk
[INFO] All done 🎉
$ snakefmt test.smk
snakefmt.exceptions.InvalidPython: Black error:
\`\`\`
Cannot parse: 12:0:             b = print(
\`\`\`

then I reopened this file, and the code changed like this:

if 1:

    rule a:
        input:
            a="a",
        run:
            for i in range(3):
                a = print(
                    "a",
                        "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
                    )
                    b = print(
                        print(
                    "sssssssssssssssssssssssssssssssssssssssssssssssss", b="b"
                    )
                )

    rule b:
        shell:
            "echo 1"

Obviously, the code was broken by snakefmt

[mbhall88]

Thanks. Yep, this is a bug indeed. We'll try getting around to this soon. Thanks for the example.