Cannot parse a complex conditional list comprehension inside of an f-string

[aphexcx]

Describe the bug

Black unexpectedly can't parse complex conditional list comprehensions inside of f-strings. Check out the example below.

To Reproduce

For example, take this code:

subdirs = ["foodir", "bardir", "tests"]

subdir_options = f" ({", ".join([dir for dir in subdirs if dir != "tests"])})" if subdirs else ""

And run it with these arguments:

$ black file.py --target-version py312

The resulting error is:

Cannot parse: 128:71: subdir_options = f" ({", ".join([dir for dir in subdirs if dir != "tests"])})" if subdirs else ""

Expected behavior

Black should parse this valid python.

Environment

• Black's version: 23.12.1
• OS and Python version: 3.12.1

Workaround

This does work if I change the f-string to use single quotes!:

subdir_options = f' ({", ".join([dir for dir in subdirs if dir != "tests"])})' if subdirs else ""

Black succeeds in formatting it to:

subdir_options = (
    f' ({", ".join([dir for dir in subdirs if dir != "tests"])})' if subdirs else ""
)

[JelleZijlstra]

Duplicate of #3746. (Note this syntax only works in Python 3.12 and higher.)

[aphexcx]

Thanks! I found a workaround, see above.