Internal error on a specific file

[zerothi]

Describe the bug
black reports an internal error when formatting a specific file.

error: cannot format /home/nicpa/codes/sisl/src/sisl_toolbox/siesta/minimizer/_metric_siesta.py: INTERNAL ERROR: Black produced code that is not equivalent to the source.  Please report a bug on https://github.com/psf/black/issues.  This diff might be helpful: /tmp/blk__3mh1ucd.log

To Reproduce

1. Download this file
2. Run black on the file. (I have done pip install -U black as of today!)

My pyproject.toml configuration file has this:

[tool.black]
line-length = 88
target-version = ["py38", "py39", "py310", "py311", "py312"]

The resulting error is:

error: cannot format /home/nicpa/codes/sisl/src/sisl_toolbox/siesta/minimizer/_metric_siesta.py: INTERNAL ERROR: Black produced code that is not equivalent to the source.  Please report a bug on https://github.com/psf/black/issues.  This diff might be helpful: /tmp/blk__3mh1ucd.log

Here is the attached diff-log file:

--- src
+++ dst
@@ -2307,16 +2307,10 @@
                   body=
                     Expr(
                       value=
                         JoinedStr(
                           values=
-                            Constant(
-                              kind=
-                                None,  # NoneType
-                              value=
-                                '',  # str
-                            )  # /Constant
                             FormattedValue(
                               conversion=
                                 -1,  # int
                               format_spec=
                                 None,  # NoneType
@@ -3263,16 +3257,10 @@
                   body=
                     Expr(
                       value=
                         JoinedStr(
                           values=
-                            Constant(
-                              kind=
-                                None,  # NoneType
-                              value=
-                                '',  # str
-                            )  # /Constant
                             FormattedValue(
                               conversion=
                                 -1,  # int
                               format_spec=
                                 None,  # NoneType
@@ -4273,16 +4261,10 @@
                   body=
                     Expr(
                       value=
                         JoinedStr(
                           values=
-                            Constant(
-                              kind=
-                                None,  # NoneType
-                              value=
-                                '',  # str
-                            )  # /Constant
                             FormattedValue(
                               conversion=
                                 -1,  # int
                               format_spec=
                                 None,  # NoneType

Expected behavior

Environment

• Black's version:

  black --version
  black, 23.10.1 (compiled: yes)
  Python (CPython) 3.11.6

• OS and Python version: Linux/debian, Python 3.11.6

[hauntsaninja]

Thanks for the report! Minimised repro:

def foo(energy_str):
    f""" {'.'.join(energy_str)} metric """

[zerothi]

Thanks for the report! Minimised repro:

def foo(energy_str):
    f""" {'.'.join(energy_str)} metric """

thanks for hunting this down, that was beyond my expertise! :)