Can not format method code when method str parameter length default value too long

[pengdada00100]

Describe the bug

Can not format method code when method str parameter length default value too long

To Reproduce
env: python 3.8.10
black: 23.12.1

def demo_method(
    param1="this is a long long long long long long long long long long long long long long long long long long long long string",
):
    a = (
        "this is a long long long long long long long long long long long long long long long long"
        " long long long long string"
    )
    pass


if __name__ == "__main__":
    pass

And run it with these arguments:

python -m black .

The resulting is:

cannot format file.py without error, But the 'param1="this is a long long long long long long long long long long long long long long long long long long long long string"' can not format

Expected behavior

The default param should be format

Environment

• Black's version: 23.12.1
• OS and Python version:

Additional context
Also I can define a string constant out of this method and pass the constant to the method.
But I think black should format this scene

[hauntsaninja]

Hm, I can't reproduce the crash with Black 23.12.1 on that file with either preview or regular style.

Maybe try making a repro over at https://black.vercel.app/? (although note that uses v24.a1)

[pengdada00100]

https://black.vercel.app/?version=stable&state=_Td6WFoAAATm1rRGAgAhARYAAAB0L-Wj4AHEAI9dAD2IimZxl1N_WlbvK5WUOuo5piIacmXZjV2Jd5cbGDbAZgLjDOUK4HDNCB64WCKQnd5ZR8luJ8LL1s62Y5Xg3nF8N9RQTnr5ZOHowiaeEgMBS2t8op3rOBvfkhBduxU_vCUer-3lxEZXEed-3kSzFH0iym-VUFQwzP71sfQ9J3k4aoIdPv_hOBhn_IkWjCtSAABTskh-SxxB-gABqwHFAwAALbw7zrHEZ_sCAAAAAARZWg==
You can see it through upper link.

[JelleZijlstra]

Are you saying that Black is crashing, or just that in Black's output the line is still too long?

[pengdada00100]

output the line is still too long

[hauntsaninja]

In that case, I think this is basically a duplicate of #3497