jupyter notebook fails in Docker

[Mari51239]

Bug Description

Starting jupyter notebook causes an issue because a package uses Python 3.12+ syntax :=

Traceback (most recent call last):
  File "/miniforge/envs/rmg_env/bin/jupyter-notebook", line 6, in <module>
    from notebook.notebookapp import main
  File "/miniforge/envs/rmg_env/lib/python3.7/site-packages/notebook/notebookapp.py", line 80, in <module>
    from .services.contents.manager import ContentsManager
  File "/miniforge/envs/rmg_env/lib/python3.7/site-packages/notebook/services/contents/manager.py", line 17, in <module>
    from nbformat import sign, validate as validate_nb, ValidationError
  File "/miniforge/envs/rmg_env/lib/python3.7/site-packages/nbformat/__init__.py", line 11, in <module>
    from . import v1, v2, v3, v4
  File "/miniforge/envs/rmg_env/lib/python3.7/site-packages/nbformat/v4/__init__.py", line 23, in <module>
    from .convert import downgrade, upgrade
  File "/miniforge/envs/rmg_env/lib/python3.7/site-packages/nbformat/v4/convert.py", line 11, in <module>
    from nbformat import v3, validator
  File "/miniforge/envs/rmg_env/lib/python3.7/site-packages/nbformat/validator.py", line 16, in <module>
    from .json_compat import ValidationError, _validator_for_name, get_current_validator
  File "/miniforge/envs/rmg_env/lib/python3.7/site-packages/nbformat/json_compat.py", line 11, in <module>
    import jsonschema
  File "/miniforge/envs/rmg_env/lib/python3.7/site-packages/jsonschema/__init__.py", line 13, in <module>
    from jsonschema._format import FormatChecker
  File "/miniforge/envs/rmg_env/lib/python3.7/site-packages/jsonschema/_format.py", line 411, in <module>
    from webcolors import CSS21_NAMES_TO_HEX
  File "/miniforge/envs/rmg_env/lib/python3.7/site-packages/webcolors/__init__.py", line 12, in <module>
    from ._conversion import (
  File "/miniforge/envs/rmg_env/lib/python3.7/site-packages/webcolors/_conversion.py", line 49
    if hex_value := color_map.get(name.lower()):
                  ^
SyntaxError: invalid syntax
(rmg_env) root@40b2688a69ac:/rmg#

Installation Information

Docker

commit 55dd066

[sevyharris]

This should be fixed as soon as the latest Docker has the Python 3.12, but for now, you can make and run this (ChatGPT-generated) Python script to replace all the walrus operators := with ==

import os

def replace_walrus_operator(directory, file_extensions=None):
    if file_extensions is None:
        file_extensions = ['.py']  # Default: only process Python files

    for root, _, files in os.walk(directory):
        for filename in files:
            if any(filename.endswith(ext) for ext in file_extensions):
                file_path = os.path.join(root, filename)
                try:
                    with open(file_path, 'r', encoding='utf-8') as f:
                        content = f.read()
                    
                    if ':=' in content:
                        new_content = content.replace(':=', '==')
                        with open(file_path, 'w', encoding='utf-8') as f:
                            f.write(new_content)
                        print(f"Updated: {file_path}")
                except Exception as e:
                    print(f"Error processing {file_path}: {e}")

# Usage:
replace_walrus_operator('/miniforge/envs/rmg_env/lib/python3.7/site-packages/webcolors/')

[rwest]

Is this something that is wrong for everyone and we should fix in the docker image? Can we specify a specific compatible version of the offending package? @Mari51239 please report here if it's still a problem on the latest docker image once that builds (hopefully tonight after #2808 is merged).

[Mari51239]

I could ran RMG without using the Python script above which replaces the walrus operators in the new docker image.
So I think problem is fixed, thank you!