black told me to report a bug for lines with # fmt: skip on them, I think #4873
Description
Describe the bug
black told me to report a bug:
~/.local/bin > black obsidian-preferences-please.py
error: cannot format obsidian-preferences-please.py: INTERNAL ERROR: Black 25.11.0 on Python (CPython) 3.14.0 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: /var/folders/6d/wgwms3kx2zx782p82r8x6qdw0000gn/T/blk_dv1novq0.log
Oh no! 💥 💔 💥
1 file failed to reformat.
To Reproduce
Here’s the source (it’s not minimal, but it isn’t large, either):
#!/usr/bin/env python3
from pathlib import Path
from os.path import join
from json import dumps, loads
def update_hotkeys(path_string):
p = Path(path_string)
hotkeys = {
"editor:swap-line-down": [{"key": "ArrowDown", "modifiers": ["Alt", "Mod"]}], # fmt: skip
"editor:swap-line-up": [{"key": "ArrowUp", "modifiers": ["Alt", "Mod"]}], # fmt: skip
"editor:toggle-source": [{"key": "S", "modifiers": ["Alt", "Mod"]}], # fmt: skip
}
for n in range(1, 6+1):
hotkeys[f'editor:set-heading-{n}'] = [{"key": f"{n}", "modifiers": ["Alt", "Mod"]}]
if p.exists():
with p.open(mode='r', encoding='UTF-8') as f:
s = f.read()
if not s.strip(): s = "{}"
existing_hotkeys = loads(s)
hotkeys = {**existing_hotkeys, **hotkeys}
with p.open(mode="w", encoding="UTF-8") as f:
output = dumps(hotkeys, indent=2, sort_keys=True)
f.write(output)
update_hotkeys(join(".obsidian", "hotkeys.json"))
def twiddle_core_plugins(path_string):
p = Path(path_string)
to_falsify = 'word-count daily-notes sync backlink properties'.split()
if not p.exists():
print(f"{path_string} does not exist. Not twiddling core plugins.")
return
s = p.read_text(encoding='UTF-8')
if not s.strip(): s = "{}"
existing_plugins = loads(s)
for plugin in to_falsify:
existing_plugins[plugin] = False
p.write_text(
dumps(existing_plugins, indent=2, ensure_ascii=False),
encoding='UTF-8'
)
twiddle_core_plugins(join(".obsidian", "core-plugins.json"))As above, I ran:
black obsidian-preferences-please.pyThe resulting error is:
error: cannot format obsidian-preferences-please.py: INTERNAL ERROR: Black 25.11.0 on Python (CPython) 3.14.0 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: /var/folders/6d/wgwms3kx2zx782p82r8x6qdw0000gn/T/blk_dv1novq0.log
Oh no! 💥 💔 💥
1 file failed to reformat.
Expected behavior
I expected black to adjust my indentation or complain that I’d made a parse error somewhere.
Environment
- Black's version: 25.11.0
- OS and Python version: macOS 15.7.2 (Sequoia), Python 3.14.0, almost certainly provided by Homebrew (same thing for
blackitself)
Additional context
Here’s the diff in the log that was mentioned:
--- src
+++ dst
@@ -117,22 +117,10 @@
kind=
None, # NoneType
value=
'editor:swap-line-down', # str
) # /Constant
- Constant(
- kind=
- None, # NoneType
- value=
- 'editor:swap-line-up', # str
- ) # /Constant
- Constant(
- kind=
- None, # NoneType
- value=
- 'editor:toggle-source', # str
- ) # /Constant
values=
List(
ctx=
Load(
) # /Load
@@ -155,102 +143,10 @@
Constant(
kind=
None, # NoneType
value=
'ArrowDown', # str
- ) # /Constant
- List(
- ctx=
- Load(
- ) # /Load
- elts=
- Constant(
- kind=
- None, # NoneType
- value=
- 'Alt', # str
- ) # /Constant
- Constant(
- kind=
- None, # NoneType
- value=
- 'Mod', # str
- ) # /Constant
- ) # /List
- ) # /Dict
- ) # /List
- List(
- ctx=
- Load(
- ) # /Load
- elts=
- Dict(
- keys=
- Constant(
- kind=
- None, # NoneType
- value=
- 'key', # str
- ) # /Constant
- Constant(
- kind=
- None, # NoneType
- value=
- 'modifiers', # str
- ) # /Constant
- values=
- Constant(
- kind=
- None, # NoneType
- value=
- 'ArrowUp', # str
- ) # /Constant
- List(
- ctx=
- Load(
- ) # /Load
- elts=
- Constant(
- kind=
- None, # NoneType
- value=
- 'Alt', # str
- ) # /Constant
- Constant(
- kind=
- None, # NoneType
- value=
- 'Mod', # str
- ) # /Constant
- ) # /List
- ) # /Dict
- ) # /List
- List(
- ctx=
- Load(
- ) # /Load
- elts=
- Dict(
- keys=
- Constant(
- kind=
- None, # NoneType
- value=
- 'key', # str
- ) # /Constant
- Constant(
- kind=
- None, # NoneType
- value=
- 'modifiers', # str
- ) # /Constant
- values=
- Constant(
- kind=
- None, # NoneType
- value=
- 'S', # str
) # /Constant
List(
ctx=
Load(
) # /LoadI also got this log file for an earlier version of black that Visual Studio Code was choosing to use — Black 25.1.0 on Python (CPython) 3.14.0:
--- src
+++ dst
@@ -117,22 +117,10 @@
kind=
None, # NoneType
value=
'editor:swap-line-down', # str
) # /Constant
- Constant(
- kind=
- None, # NoneType
- value=
- 'editor:swap-line-up', # str
- ) # /Constant
- Constant(
- kind=
- None, # NoneType
- value=
- 'editor:toggle-source', # str
- ) # /Constant
values=
List(
ctx=
Load(
) # /Load
@@ -155,102 +143,10 @@
Constant(
kind=
None, # NoneType
value=
'ArrowDown', # str
- ) # /Constant
- List(
- ctx=
- Load(
- ) # /Load
- elts=
- Constant(
- kind=
- None, # NoneType
- value=
- 'Alt', # str
- ) # /Constant
- Constant(
- kind=
- None, # NoneType
- value=
- 'Mod', # str
- ) # /Constant
- ) # /List
- ) # /Dict
- ) # /List
- List(
- ctx=
- Load(
- ) # /Load
- elts=
- Dict(
- keys=
- Constant(
- kind=
- None, # NoneType
- value=
- 'key', # str
- ) # /Constant
- Constant(
- kind=
- None, # NoneType
- value=
- 'modifiers', # str
- ) # /Constant
- values=
- Constant(
- kind=
- None, # NoneType
- value=
- 'ArrowUp', # str
- ) # /Constant
- List(
- ctx=
- Load(
- ) # /Load
- elts=
- Constant(
- kind=
- None, # NoneType
- value=
- 'Alt', # str
- ) # /Constant
- Constant(
- kind=
- None, # NoneType
- value=
- 'Mod', # str
- ) # /Constant
- ) # /List
- ) # /Dict
- ) # /List
- List(
- ctx=
- Load(
- ) # /Load
- elts=
- Dict(
- keys=
- Constant(
- kind=
- None, # NoneType
- value=
- 'key', # str
- ) # /Constant
- Constant(
- kind=
- None, # NoneType
- value=
- 'modifiers', # str
- ) # /Constant
- values=
- Constant(
- kind=
- None, # NoneType
- value=
- 'S', # str
) # /Constant
List(
ctx=
Load(
) # /Load