all dataclasses in markdown_it throw errors when a different dependency tries to import it

[DougStoker]

Describe the bug

Importing a library that depends upon markdown_it leads to traceback.

Reproduce the bug

>>> import gradio as gr
Traceback (most recent call last):
  File "/Users/doug/Documents/diffusion/kohya_ss/kohya_gui.py", line 1, in <module>
    import gradio as gr
  File "/Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages/gradio/__init__.py", line 3, in <module>
    import gradio.components as components
  File "/Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages/gradio/components.py", line 28, in <module>
    from markdown_it import MarkdownIt
  File "/Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages/markdown_it/__init__.py", line 5, in <module>
    from .main import MarkdownIt
  File "/Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages/markdown_it/main.py", line 7, in <module>
    from . import helpers, presets  # noqa F401
  File "/Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages/markdown_it/helpers/__init__.py", line 5, in <module>
    from .parse_link_label import parseLinkLabel
  File "/Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages/markdown_it/helpers/parse_link_label.py", line 8, in <module>
    from markdown_it.rules_inline import StateInline
  File "/Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages/markdown_it/rules_inline/__init__.py", line 17, in <module>
    from . import emphasis, strikethrough
  File "/Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages/markdown_it/rules_inline/emphasis.py", line 4, in <module>
    from .state_inline import Delimiter, StateInline
  File "/Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages/markdown_it/rules_inline/state_inline.py", line 10, in <module>
    from ..ruler import StateBase
  File "/Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages/markdown_it/ruler.py", line 55, in <module>
    @dataclass(**DATACLASS_KWARGS)
TypeError: dataclass() got an unexpected keyword argument 'slots'

List your environment

python 3.10
macos

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[agoose77]

@DougStoker I've edited your issue for legibility. I can't reproduce this. I know that dataclasses added a slots argument in 3.10. Can you ensure that you're running the following script in your environment, and list the results?

python -m pip list -vv
python --version
python -c "from markdown_it import MarkdownIt"

[chrisjsewell]

thanks @agoose77, I note it says the version is "3.10.0a7", perhaps it wasn't added by then, but indeed a very niche case to be using this particular Python alpha release 😅

[agoose77]

Good spot, I didn't look at the venv path!

[DougStoker]

(base) Douglass-MacBook-Pro:~ doug$ python -m pip list -vv Package Version Location Installer

---

absl-py 1.3.0 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip accelerate 0.15.0 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip addict 2.4.0 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip aenum 3.1.11 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip aiofiles 23.1.0 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip aiohttp 3.8.3 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip aiosignal 1.3.1 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip albumentations 1.3.0 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip altair 4.2.2 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip antlr4-python3-runtime 4.9.3 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip anyio 3.6.2 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip appnope 0.1.3 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip asttokens 2.2.1 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip astunparse 1.6.3 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip async-timeout 4.0.2 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip attrs 22.2.0 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip backcall 0.2.0 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip basicsr 1.4.2 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages bcrypt 4.0.1 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip bitsandbytes 0.35.0 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip blendmodes 2022 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip boltons 21.0.0 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip cachetools 5.2.0 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/Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip sentencepiece 0.1.97 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip setuptools 52.0.0 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip six 1.16.0 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip smmap 5.0.0 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip sniffio 1.3.0 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip stack-data 0.6.2 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip starlette 0.22.0 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip tb-nightly 2.12.0a20221227 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip tensorboard 2.10.1 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip tensorboard-data-server 0.6.1 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip tensorboard-plugin-wit 1.8.1 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip tensorflow 2.10.1 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip tensorflow-estimator 2.10.0 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip tensorflow-io-gcs-filesystem 0.31.0 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip termcolor 2.2.0 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip threadpoolctl 3.1.0 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip tifffile 2022.10.10 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip timm 0.6.12 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip tk 0.1.0 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip tokenizers 0.12.1 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip toml 0.10.2 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip toolz 0.12.0 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip torch 1.13.1 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip torchdiffeq 0.2.3 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip torchmetrics 0.11.0 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip torchsde 0.2.5 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip torchvision 0.14.1 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip tornado 6.2 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip tqdm 4.64.1 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip traitlets 5.8.1 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip traittypes 0.2.1 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip trampoline 0.1.2 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip transformers 4.26.0 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip typing-extensions 4.4.0 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip uc-micro-py 1.0.1 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip urllib3 1.26.13 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip uvicorn 0.20.0 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip voluptuous 0.13.1 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip voxelfuse 1.2.8 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip wcwidth 0.2.5 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip websockets 10.4 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip Werkzeug 2.2.2 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip wheel 0.38.4 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip widgetsnbextension 4.0.5 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip wrapt 1.15.0 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip yapf 0.32.0 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip yarl 1.8.2 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip zipp 3.15.0 /Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages pip WARNING: You are using pip version 21.0.1; however, version 23.0.1 is available. You should consider upgrading via the '/Users/doug/.pyenv/versions/3.10.0a7/bin/python -m pip install --upgrade pip' command. (base) Douglass-MacBook-Pro:~ doug$ python --version Python 3.10.0a7 (base) Douglass-MacBook-Pro:~ doug$ python -c "from markdown_it import MarkdownIt" Traceback (most recent call last): File "", line 1, in File "/Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages/markdown_it/init.py", line 5, in from .main import MarkdownIt File "/Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages/markdown_it/main.py", line 7, in from . import helpers, presets # noqa F401 File "/Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages/markdown_it/helpers/init.py", line 5, in from .parse_link_label import parseLinkLabel File "/Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages/markdown_it/helpers/parse_link_label.py", line 8, in from markdown_it.rules_inline import StateInline File "/Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages/markdown_it/rules_inline/init.py", line 17, in from . import emphasis, strikethrough File "/Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages/markdown_it/rules_inline/emphasis.py", line 4, in from .state_inline import Delimiter, StateInline File "/Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages/markdown_it/rules_inline/state_inline.py", line 10, in from ..ruler import StateBase File "/Users/doug/.pyenv/versions/3.10.0a7/lib/python3.10/site-packages/markdown_it/ruler.py", line 55, in @dataclass(**DATACLASS_KWARGS) TypeError: dataclass() got an unexpected keyword argument 'slots'

I didn't even realize I was using an alpha version

[agoose77]

@DougStoker thanks!

The short answer is that this is a bug, though it's odd that you are you using an alpha version of an older Python release. I'd suggest upgrading as the easiest solution.

The fix for this would be this PR: https://github.com/executablebooks/markdown-it-py/pull/258