Error while detecting black version:

[luojc0517]

Diagnostic Data

• Python version (& distribution if applicable, e.g., Anaconda): 3.9.0
  black, 25.1.0 (compiled: yes)
  Python (CPython) 3.9.0
• Type of virtual environment used (e.g., conda, venv, virtualenv, etc.): conda
• Operating system (and version): 22.04.3 LTS (Jammy Jellyfish)
• Version of tool extension you are using: v2025.2.0

Behaviour

Expected Behavior

format code

Actual Behavior

error

Reproduction Steps:

format python documents

Logs:

2025-03-19 13:55:53.754 [info] CWD formatter: /data/workspace/agent-framework
2025-03-19 13:55:53.794 [info] [Error - 1:55:53 PM] Traceback (most recent call last):
  File "/root/.vscode-server/extensions/ms-python.black-formatter-2025.2.0/bundled/tool/lsp_server.py", line 604, in _run_tool
    result = utils.run_module(
  File "/root/.vscode-server/extensions/ms-python.black-formatter-2025.2.0/bundled/tool/lsp_utils.py", line 171, in run_module
    return _run_module(module, argv, use_stdin, source)
  File "/root/.vscode-server/extensions/ms-python.black-formatter-2025.2.0/bundled/tool/lsp_utils.py", line 158, in _run_module
    runpy.run_module(module, run_name="__main__")
  File "/data/miniconda3/lib/python3.9/runpy.py", line 206, in run_module
    mod_name, mod_spec, code = _get_module_details(mod_name)
  File "/data/miniconda3/lib/python3.9/runpy.py", line 147, in _get_module_details
    return _get_module_details(pkg_main_name, error)
  File "/data/miniconda3/lib/python3.9/runpy.py", line 111, in _get_module_details
    __import__(pkg_name)
  File "/root/.vscode-server/extensions/ms-python.black-formatter-2025.2.0/bundled/libs/black/__init__.py", line 33, in <module>
    from black.comments import normalize_fmt_off
  File "/root/.vscode-server/extensions/ms-python.black-formatter-2025.2.0/bundled/libs/black/comments.py", line 8, in <module>
    from black.nodes import (
  File "/root/.vscode-server/extensions/ms-python.black-formatter-2025.2.0/bundled/libs/black/nodes.py", line 19, in <module>
    from blib2to3 import pygram
  File "/root/.vscode-server/extensions/ms-python.black-formatter-2025.2.0/bundled/libs/blib2to3/pygram.py", line 11, in <module>
    from .pgen2 import driver
  File "/root/.vscode-server/extensions/ms-python.black-formatter-2025.2.0/bundled/libs/blib2to3/pgen2/driver.py", line 35, in <module>
    from . import grammar, parse, pgen, token, tokenize
  File "/root/.vscode-server/extensions/ms-python.black-formatter-2025.2.0/bundled/libs/blib2to3/pgen2/parse.py", line 135, in <module>
    class Parser:
  File "/root/.vscode-server/extensions/ms-python.black-formatter-2025.2.0/bundled/libs/blib2to3/pgen2/parse.py", line 165, in Parser
    def __init__(self, grammar: Grammar, convert: Optional[Convert] = None) -> None:
  File "/data/miniconda3/lib/python3.9/typing.py", line 243, in inner
    return func(*args, **kwds)
  File "/data/miniconda3/lib/python3.9/typing.py", line 316, in __getitem__
    return self._getitem(self, parameters)
  File "/data/miniconda3/lib/python3.9/typing.py", line 433, in Optional
    return Union[arg, type(None)]
  File "/data/miniconda3/lib/python3.9/typing.py", line 243, in inner
    return func(*args, **kwds)
  File "/data/miniconda3/lib/python3.9/typing.py", line 316, in __getitem__
    return self._getitem(self, parameters)
  File "/data/miniconda3/lib/python3.9/typing.py", line 421, in Union
    parameters = _remove_dups_flatten(parameters)
  File "/data/miniconda3/lib/python3.9/typing.py", line 215, in _remove_dups_flatten
    all_params = set(params)
TypeError: unhashable type: 'list'

2025-03-19 13:55:53.794 [info] Error while detecting black version:
Traceback (most recent call last):
  File "/root/.vscode-server/extensions/ms-python.black-formatter-2025.2.0/bundled/tool/lsp_server.py", line 302, in _update_workspace_settings_with_version_info
    result = _run_tool(["--version"], copy.deepcopy(settings))
  File "/root/.vscode-server/extensions/ms-python.black-formatter-2025.2.0/bundled/tool/lsp_server.py", line 604, in _run_tool
    result = utils.run_module(
  File "/root/.vscode-server/extensions/ms-python.black-formatter-2025.2.0/bundled/tool/lsp_utils.py", line 171, in run_module
    return _run_module(module, argv, use_stdin, source)
  File "/root/.vscode-server/extensions/ms-python.black-formatter-2025.2.0/bundled/tool/lsp_utils.py", line 158, in _run_module
    runpy.run_module(module, run_name="__main__")
  File "/data/miniconda3/lib/python3.9/runpy.py", line 206, in run_module
    mod_name, mod_spec, code = _get_module_details(mod_name)
  File "/data/miniconda3/lib/python3.9/runpy.py", line 147, in _get_module_details
    return _get_module_details(pkg_main_name, error)
  File "/data/miniconda3/lib/python3.9/runpy.py", line 111, in _get_module_details
    __import__(pkg_name)
  File "/root/.vscode-server/extensions/ms-python.black-formatter-2025.2.0/bundled/libs/black/__init__.py", line 33, in <module>
    from black.comments import normalize_fmt_off
  File "/root/.vscode-server/extensions/ms-python.black-formatter-2025.2.0/bundled/libs/black/comments.py", line 8, in <module>
    from black.nodes import (
  File "/root/.vscode-server/extensions/ms-python.black-formatter-2025.2.0/bundled/libs/black/nodes.py", line 19, in <module>
    from blib2to3 import pygram
  File "/root/.vscode-server/extensions/ms-python.black-formatter-2025.2.0/bundled/libs/blib2to3/pygram.py", line 11, in <module>
    from .pgen2 import driver
  File "/root/.vscode-server/extensions/ms-python.black-formatter-2025.2.0/bundled/libs/blib2to3/pgen2/driver.py", line 35, in <module>
    from . import grammar, parse, pgen, token, tokenize
  File "/root/.vscode-server/extensions/ms-python.black-formatter-2025.2.0/bundled/libs/blib2to3/pgen2/parse.py", line 135, in <module>
    class Parser:
  File "/root/.vscode-server/extensions/ms-python.black-formatter-2025.2.0/bundled/libs/blib2to3/pgen2/parse.py", line 165, in Parser
    def __init__(self, grammar: Grammar, convert: Optional[Convert] = None) -> None:
  File "/data/miniconda3/lib/python3.9/typing.py", line 243, in inner
    return func(*args, **kwds)
  File "/data/miniconda3/lib/python3.9/typing.py", line 316, in __getitem__
    return self._getitem(self, parameters)
  File "/data/miniconda3/lib/python3.9/typing.py", line 433, in Optional
    return Union[arg, type(None)]
  File "/data/miniconda3/lib/python3.9/typing.py", line 243, in inner
    return func(*args, **kwds)
  File "/data/miniconda3/lib/python3.9/typing.py", line 316, in __getitem__
    return self._getitem(self, parameters)
  File "/data/miniconda3/lib/python3.9/typing.py", line 421, in Union
    parameters = _remove_dups_flatten(parameters)
  File "/data/miniconda3/lib/python3.9/typing.py", line 215, in _remove_dups_flatten
    all_params = set(params)
TypeError: unhashable type: 'list'

Outcome When Attempting Debugging Steps:

Did running it from the command line work?

Extra Details

[luojc0517]

revert to last month version is ok

v2025.2.0 not work
v2024.6.0 is ok

[karthiknadig]

This looks like a bug in black itself, please file this on https://github.com/psf/black/issues

The difference is that we ship black v24.2.0 with (extension version 2024.6.0) and black v25.1.0 with (extension version 2025.2.0)