INTERNAL ERROR: Black produced invalid code: f-string: expecting '}'

[max-wittig]

Describe the bug

Internal crash

To Reproduce

Run the code down below

For example, take this code:

  File "src/black/__init__.py", line 1476, in assert_equivalent
  File "src/black/parsing.py", line 140, in parse_ast
email = "test@example.com"
query_params = UsersRequestBuilder.UsersRequestBuilderGetQueryParameters(
    filter=f"mail eq '{email}' or startswith(userPrincipalName, '{email.split("
    @ ")[0]}')",
    count=True,  # required
)

And run it with these arguments:

$ black .

The resulting error is:

[> cannot format file.py: INTERNAL ERROR: ...](error: cannot format whatever.py: INTERNAL ERROR: Black produced invalid code: f-string: expecting '}' (, line 3). Please report a bug on https://github.com/psf/black/issues. This invalid output might be helpful: /var/folders/lg/s80890fd1ts6s1w69c8lg03m0000gn/T/blk_jssqz16j.log)

Expected behavior

It should format correctly

Environment

• Black's version: 23.12.1
• OS and Python version: macOS 14.2.1, Python (CPython) 3.12.1

[hauntsaninja]

Duplicate of #3746

[max-wittig]

@hauntsaninja Hi! This is not 3.12 code. This is normal f string formatting.

[JelleZijlstra]

Could you share what your input code was?

[max-wittig]

As listed above. Just put that into a file and try.

email = "test@example.com"
query_params = UsersRequestBuilder.UsersRequestBuilderGetQueryParameters(
    filter=f"mail eq '{email}' or startswith(userPrincipalName, '{email.split("
    @ ")[0]}')",
    count=True,  # required
)

[max-wittig]

Ahh but maybe this can be closed. It's also detected as a SyntaxError now, but maybe the message is wrong?

    filter=f"mail eq '{email}' or startswith(userPrincipalName, '{email.split("@")[0]}')",
                                                                               ^
SyntaxError: f-string: unmatched '('

[JelleZijlstra]

That code is valid only in 3.12+, so Shantanu was correct in closing this.

[max-wittig]

Okay sorry. I didn't know that I wrote 3.12 code