ModuleNotFoundError: No module named 'jupyter_core'

[arunhpatil]

Hi I had installed jupyterlab with Conda, and it was working fine until recently. I can't correct an issue after I started installing R, something somewhere is messed up.

$jupyter-lab
Traceback (most recent call last):
  File "/home/arun/.local/bin/jupyter-lab", line 5, in <module>
    from jupyterlab.labapp import main
  File "/home/arun/.local/lib/python3.8/site-packages/jupyterlab/labapp.py", line 11, in <module>
    from jupyter_core.application import JupyterApp, NoStart, base_aliases, base_flags
ModuleNotFoundError: No module named 'jupyter_core'

I tried this:

$ conda install -c conda-forge jupyter_core
/home/arun/.local/lib/python3.8/site-packages/requests/__init__.py:89: RequestsDependencyWarning: urllib3 (1.26.11) or chardet (3.0.4) doesn't match a supported version!
  warnings.warn("urllib3 ({}) or chardet ({}) doesn't match a supported "
Collecting package metadata (current_repodata.json): done
Solving environment: done

# All requested packages already installed.

Retrieving notices: ...working... done

I also tried this:

$ pip3.8 install jupyter_core
Traceback (most recent call last):
  File "/home/arun/miniconda3/bin/pip3.8", line 5, in <module>
    from pip._internal.cli.main import main
  File "/home/arun/miniconda3/lib/python3.8/site-packages/pip/_internal/cli/main.py", line 9, in <module>
    from pip._internal.cli.autocompletion import autocomplete
  File "/home/arun/miniconda3/lib/python3.8/site-packages/pip/_internal/cli/autocompletion.py", line 10, in <module>
    from pip._internal.cli.main_parser import create_main_parser
  File "/home/arun/miniconda3/lib/python3.8/site-packages/pip/_internal/cli/main_parser.py", line 8, in <module>
    from pip._internal.cli import cmdoptions
  File "/home/arun/miniconda3/lib/python3.8/site-packages/pip/_internal/cli/cmdoptions.py", line 24, in <module>
    from pip._internal.cli.parser import ConfigOptionParser
  File "/home/arun/miniconda3/lib/python3.8/site-packages/pip/_internal/cli/parser.py", line 12, in <module>
    from pip._internal.configuration import Configuration, ConfigurationError
  File "/home/arun/miniconda3/lib/python3.8/site-packages/pip/_internal/configuration.py", line 26, in <module>
    from pip._internal.utils.logging import getLogger
  File "/home/arun/miniconda3/lib/python3.8/site-packages/pip/_internal/utils/logging.py", line 29, in <module>
    from pip._internal.utils.misc import ensure_dir
  File "/home/arun/miniconda3/lib/python3.8/site-packages/pip/_internal/utils/misc.py", line 42, in <module>
    from pip._internal.locations import get_major_minor_version
  File "/home/arun/miniconda3/lib/python3.8/site-packages/pip/_internal/locations/__init__.py", line 14, in <module>
    from . import _sysconfig
  File "/home/arun/miniconda3/lib/python3.8/site-packages/pip/_internal/locations/_sysconfig.py", line 11, in <module>
    from .base import change_root, get_major_minor_version, is_osx_framework
  File "/home/arun/miniconda3/lib/python3.8/site-packages/pip/_internal/locations/base.py", line 16, in <module>
    site_packages: typing.Optional[str] = sysconfig.get_path("purelib")
  File "/home/arun/miniconda3/lib/python3.8/sysconfig.py", line 521, in get_path
    return get_paths(scheme, vars, expand)[name]
  File "/home/arun/miniconda3/lib/python3.8/sysconfig.py", line 511, in get_paths
    return _expand_vars(scheme, vars)
  File "/home/arun/miniconda3/lib/python3.8/sysconfig.py", line 172, in _expand_vars
    _extend_dict(vars, get_config_vars())
  File "/home/arun/miniconda3/lib/python3.8/sysconfig.py", line 559, in get_config_vars
    _init_posix(_CONFIG_VARS)
  File "/home/arun/miniconda3/lib/python3.8/sysconfig.py", line 430, in _init_posix
    _temp = __import__(name, globals(), locals(), ['build_time_vars'], 0)
ModuleNotFoundError: No module named '_sysconfigdata_x86_64_conda_cos7_linux_gnu'

I also raised an issue in Conda, issue-1392979472. I have given more system info there, but if you need any additional information, please let me know.

I tried this too: $jupyter

Traceback (most recent call last):
  File "/home/arun/miniconda3/bin/jupyter", line 11, in <module>
    sys.exit(main())
  File "/home/arun/miniconda3/lib/python3.8/site-packages/jupyter_core/command.py", line 319, in main
    parser.print_help(file=sys.stderr)
  File "/home/arun/miniconda3/lib/python3.8/argparse.py", line 2494, in print_help
    self._print_message(self.format_help(), file)
  File "/home/arun/miniconda3/lib/python3.8/argparse.py", line 2475, in format_help
    formatter.add_text(self.epilog)
  File "/home/arun/miniconda3/lib/python3.8/site-packages/jupyter_core/command.py", line 30, in epilog
    return "Available subcommands: %s" % " ".join(list_subcommands())
  File "/home/arun/miniconda3/lib/python3.8/site-packages/jupyter_core/command.py", line 73, in list_subcommands
    for d in _path_with_self():
  File "/home/arun/miniconda3/lib/python3.8/site-packages/jupyter_core/command.py", line 151, in _path_with_self
    bindir = sysconfig.get_path("scripts")
  File "/home/arun/miniconda3/lib/python3.8/sysconfig.py", line 521, in get_path
    return get_paths(scheme, vars, expand)[name]
  File "/home/arun/miniconda3/lib/python3.8/sysconfig.py", line 511, in get_paths
    return _expand_vars(scheme, vars)
  File "/home/arun/miniconda3/lib/python3.8/sysconfig.py", line 172, in _expand_vars
    _extend_dict(vars, get_config_vars())
  File "/home/arun/miniconda3/lib/python3.8/sysconfig.py", line 559, in get_config_vars
    _init_posix(_CONFIG_VARS)
  File "/home/arun/miniconda3/lib/python3.8/sysconfig.py", line 430, in _init_posix
    _temp = __import__(name, globals(), locals(), ['build_time_vars'], 0)
ModuleNotFoundError: No module named '_sysconfigdata_x86_64_conda_cos7_linux_gnu'

I am using Ubuntu 18 on WSL.