【发布时间】：2021-11-11 13:20:10
【问题描述】：
在我尝试安装和注册一个新的虚拟环境以便我可以在 Jupyter 笔记本中使用它之后，我遇到了以下问题：我打开或创建的任何笔记本都会显示错误消息：“找不到内核匹配Python 3. 请选择一个内核：" 但是没有内核注册了...
虽然我注意到许多其他人过去也面临同样的问题，但我找不到一个好的答案。有人可以帮忙吗？
我正在使用 Ubuntu 和 pip。
这似乎是 Jupyter 的配置问题。
$ jupyter --paths --debug
JUPYTER_PREFER_ENV_PATH is not set, making the user-level path preferred over the environment-level path for data and config
JUPYTER_NO_CONFIG is not set, so we use the full path list for config
JUPYTER_CONFIG_PATH is not set, so we do not prepend anything to the config paths
JUPYTER_CONFIG_DIR is not set, so we use the default user-level config directory
JUPYTER_PATH is not set, so we do not prepend anything to the data paths
JUPYTER_DATA_DIR is not set, so we use the default user-level data directory
JUPYTER_RUNTIME_DIR is not set, so we use the default runtime directory
config:
/home/florian/.jupyter
/home/florian/..../OCR/ocr_env/etc/jupyter
/usr/local/etc/jupyter
/etc/jupyter
data:
/home/florian/.local/share/jupyter
jupyter kernelspec list
Available kernels:
ocr_env /home/florian/.local/share/jupyter/kernels/ocr_env
python3 /home/florian/.local/share/jupyter/kernels/python3
spark_env /home/florian/.local/share/jupyter/kernels/spark_env
tensorflow /home/florian/.local/share/jupyter/kernels/tensorflow
尝试升级 pip 的另一个错误：
python -m pip install --upgrade pip
Traceback (most recent call last):
File "/home/florian/anaconda3/lib/python3.8/runpy.py", line 194, in _run_module_as_main
return _run_code(code, main_globals, None,
File "/home/florian/anaconda3/lib/python3.8/runpy.py", line 87, in _run_code
exec(code, run_globals)
File "/home/florian/anaconda3/lib/python3.8/site-packages/pip/__main__.py", line 23, in <module>
from pip._internal.cli.main import main as _main # isort:skip # noqa
File "/home/florian/anaconda3/lib/python3.8/site-packages/pip/_internal/cli/main.py", line 10, in <module>
from pip._internal.cli.autocompletion import autocomplete
File "/home/florian/anaconda3/lib/python3.8/site-packages/pip/_internal/cli/autocompletion.py", line 9, in <module>
from pip._internal.cli.main_parser import create_main_parser
File "/home/florian/anaconda3/lib/python3.8/site-packages/pip/_internal/cli/main_parser.py", line 7, in <module>
from pip._internal.cli import cmdoptions
File "/home/florian/anaconda3/lib/python3.8/site-packages/pip/_internal/cli/cmdoptions.py", line 23, in <module>
from pip._internal.cli.progress_bars import BAR_TYPES
File "/home/florian/anaconda3/lib/python3.8/site-packages/pip/_internal/cli/progress_bars.py", line 12, in <module>
from pip._internal.utils.logging import get_indentation
File "/home/florian/anaconda3/lib/python3.8/site-packages/pip/_internal/utils/logging.py", line 18, in <module>
from pip._internal.utils.misc import ensure_dir
File "/home/florian/anaconda3/lib/python3.8/site-packages/pip/_internal/utils/misc.py", line 33, in <module>
from pip._internal.locations import (
File "/home/florian/anaconda3/lib/python3.8/site-packages/pip/_internal/locations/__init__.py", line 9, in <module>
from . import _distutils, _sysconfig
File "/home/florian/anaconda3/lib/python3.8/site-packages/pip/_internal/locations/_sysconfig.py", line 8, in <module>
from pip._internal.exceptions import InvalidSchemeCombination, UserInstallationInvalid
ImportError: cannot import name 'InvalidSchemeCombination' from 'pip._internal.exceptions' (/home/florian/anaconda3/lib/python3.8/site-packages/pip/_internal/exceptions.py)
【问题讨论】：
-
$ which python从您启动 jupyter notebook 的终端输出什么？ -
回答$which python: /home/.../OCR/ocr_env/bin/python
-
我相信这是一个带有 jupyter 的配置文件。我在打印输出上方保存到 jupyter --debug.
标签： python pip jupyter-notebook virtualenv jupyter-lab