Is there an existing issue for this?
Operating System
Win 11
DeepLabCut version
rc14 to 3.0.0
What engine are you using?
pytorch
DeepLabCut mode
single animal
Device type
cpu
Bug description 🐛
I tried upgrading my rc14 environment to the full 3.0.0 release, but it throws a warning during the upgrade and then fails to load the GUI.
From what I can tell, the issue is that napari requires pydantic<2, but when you downgrade that, you get deeplabcut 3.0.0 requires pydantic<3,>=2, so you are stuck in a hybrid state.
Luckily a fresh install in a new env is working
Steps To Reproduce
- Have existing rc14 env
- pip install --upgrade deeplabcut
- python -m deeplabcut
- see error
Relevant log output
ERROR: pip's dependency resolver does not currently take into account all the packages that are installed. This behaviour is the source of the following dependency conflicts.
napari 0.4.18 requires pydantic<2,>=1.9.0, but you have pydantic 2.13.4 which is incompatible.
Successfully installed MarkupSafe-3.0.3 Shapely-2.1.2 albumentations-1.4.3 annotated-doc-0.0.4 annotated-types-0.7.0 anyio-4.13.0 blosc2-4.3.3 bottleneck-1.6.0 certifi-2026.5.20 charset_normalizer-3.4.7 click-8.4.1 colorama-0.4.6 contourpy-1.3.2 cycler-0.12.1 deeplabcut-3.0.0 dlclibrary-0.0.12 einops-0.8.2 exceptiongroup-1.3.1 filelock-3.15.4 filterpy-1.4.5 fonttools-4.63.0 fsspec-2026.4.0 h11-0.16.0 hf-xet-1.5.0 httpcore-1.0.9 httpx-0.28.1 huggingface-hub-1.16.1 idna-3.16 imageio-2.37.3 imageio-ffmpeg-0.6.0 imgaug-0.4.0 jinja2-3.1.6 joblib-1.5.3 kiwisolver-1.5.0 lazy-loader-0.5 llvmlite-0.47.0 markdown-it-py-4.2.0 matplotlib-3.8.4 mdurl-0.1.2 mpmath-1.3.0 msgpack-1.1.2 ndindex-1.10.1 networkx-3.4.2 numba-0.65.1 numexpr-2.14.1 numpy-1.26.4 opencv-python-4.11.0.86 opencv-python-headless-4.11.0.86 packaging-26.2 pandas-2.3.3 patsy-1.0.2 pillow-12.2.0 py-cpuinfo-9.0.0 pycocotools-2.0.11 pydantic-2.13.4 pydantic-core-2.46.4 pygments-2.20.0 pyparsing-3.3.2 python-dateutil-2.9.0.post0 pytz-2026.2 pyyaml-6.0.3 requests-2.34.2 rich-15.0.0 ruamel-yaml-0.19.1 safetensors-0.7.0 scikit-image-0.25.2 scikit-learn-1.7.2 scipy-1.15.3 setuptools-81.0.0 shellingham-1.5.4 six-1.17.0 statsmodels-0.14.6 sympy-1.14.0 tables-3.10.1 threadpoolctl-3.6.0 tifffile-2025.5.10 timm-1.0.27 torch-2.12.0 torchvision-0.27.0 tqdm-4.67.3 typer-0.25.1 typing-extensions-4.15.0 typing-inspection-0.4.2 tzdata-2026.2 urllib3-2.7.0
(DEEPLABCUT) C:\Windows\System32>python -m deeplabcut
Starting GUI...
Traceback (most recent call last):
File "C:\Users\thorb\anaconda3\envs\DEEPLABCUT\lib\runpy.py", line 196, in _run_module_as_main
return _run_code(code, main_globals, None,
File "C:\Users\thorb\anaconda3\envs\DEEPLABCUT\lib\runpy.py", line 86, in _run_code
exec(code, run_globals)
File "C:\Users\thorb\anaconda3\envs\DEEPLABCUT\lib\site-packages\deeplabcut\__main__.py", line 36, in <module>
main()
File "C:\Users\thorb\anaconda3\envs\DEEPLABCUT\lib\site-packages\deeplabcut\__main__.py", line 27, in main
launch_dlc()
File "C:\Users\thorb\anaconda3\envs\DEEPLABCUT\lib\site-packages\deeplabcut\gui\launch_script.py", line 64, in launch_dlc
from deeplabcut.gui.window import MainWindow
File "C:\Users\thorb\anaconda3\envs\DEEPLABCUT\lib\site-packages\deeplabcut\gui\window.py", line 21, in <module>
from napari_deeplabcut import __version__ as NAPARI_DLC_VERSION
File "C:\Users\thorb\anaconda3\envs\DEEPLABCUT\lib\site-packages\napari_deeplabcut\__init__.py", line 26, in <module>
from ._reader import (
File "C:\Users\thorb\anaconda3\envs\DEEPLABCUT\lib\site-packages\napari_deeplabcut\_reader.py", line 14, in <module>
from napari.types import LayerData
File "C:\Users\thorb\anaconda3\envs\DEEPLABCUT\lib\site-packages\napari\types.py", line 206, in <module>
_register_types_with_magicgui()
File "C:\Users\thorb\anaconda3\envs\DEEPLABCUT\lib\site-packages\napari\types.py", line 166, in _register_types_with_magicgui
from napari.utils import _magicgui as _mgui
File "C:\Users\thorb\anaconda3\envs\DEEPLABCUT\lib\site-packages\napari\utils\__init__.py", line 2, in <module>
from napari.utils.colormaps import Colormap
File "C:\Users\thorb\anaconda3\envs\DEEPLABCUT\lib\site-packages\napari\utils\colormaps\__init__.py", line 2, in <module>
from napari.utils.colormaps.colormap import Colormap
File "C:\Users\thorb\anaconda3\envs\DEEPLABCUT\lib\site-packages\napari\utils\colormaps\colormap.py", line 9, in <module>
from napari.utils.events import EventedModel
File "C:\Users\thorb\anaconda3\envs\DEEPLABCUT\lib\site-packages\napari\utils\events\__init__.py", line 17, in <module>
from napari.utils.events.evented_model import EventedModel
File "C:\Users\thorb\anaconda3\envs\DEEPLABCUT\lib\site-packages\napari\utils\events\evented_model.py", line 66, in <module>
class EventedMetaclass(main.ModelMetaclass):
File "C:\Users\thorb\anaconda3\envs\DEEPLABCUT\lib\site-packages\pydantic\_migration.py", line 314, in wrapper
raise AttributeError(f'module {module!r} has no attribute {name!r}')
AttributeError: module 'pydantic.main' has no attribute 'ModelMetaclass'
Anything else?
No response
Code of Conduct
Is there an existing issue for this?
Operating System
Win 11
DeepLabCut version
rc14 to 3.0.0
What engine are you using?
pytorch
DeepLabCut mode
single animal
Device type
cpu
Bug description 🐛
I tried upgrading my rc14 environment to the full 3.0.0 release, but it throws a warning during the upgrade and then fails to load the GUI.
From what I can tell, the issue is that napari requires pydantic<2, but when you downgrade that, you get
deeplabcut 3.0.0 requires pydantic<3,>=2, so you are stuck in a hybrid state.Luckily a fresh install in a new env is working
Steps To Reproduce
Relevant log output
Anything else?
No response
Code of Conduct