No module named ‘prompt_toolkit‘

ModuleNotFoundError: No module named ‘prompt_toolkit’
pycharm里面运行jupyter notebook时候报错:

ModuleNotFoundError: No module named 'prompt_toolkit

卸载对应的包,然后再安装即可解决。

pip uninstall prompt-toolkit
pip install prompt-toolkit

我用了第三个方法后这样显示:Traceback (most recent call last): File "C:\Users\PC\venv\lib\site-packages\prompt_toolkit\application\current.py", line 6, in <module> from contextvars import ContextVar ModuleNotFoundError: No module named 'contextvars' During handling of the above exception, another exception occurred: Traceback (most recent call last): File "d:\program files\python36\lib\runpy.py", line 183, in _run_module_as_main mod_name, mod_spec, code = _get_module_details(mod_name, _Error) File "d:\program files\python36\lib\runpy.py", line 142, in _get_module_details return _get_module_details(pkg_main_name, error) File "d:\program files\python36\lib\runpy.py", line 109, in _get_module_details __import__(pkg_name) File "C:\Users\PC\venv\lib\site-packages\ipykernel\__init__.py", line 2, in <module> from .connect import * File "C:\Users\PC\venv\lib\site-packages\ipykernel\connect.py", line 11, in <module> from IPython.core.profiledir import ProfileDir File "C:\Users\PC\venv\lib\site-packages\IPython\__init__.py", line 56, in <module> from .terminal.embed import embed File "C:\Users\PC\venv\lib\site-packages\IPython\terminal\embed.py", line 16, in <module> from IPython.terminal.interactiveshell import TerminalInteractiveShell File "C:\Users\PC\venv\lib\site-packages\IPython\terminal\interactiveshell.py", line 19, in <module> from prompt_toolkit.enums import DEFAULT_BUFFER, EditingMode File "C:\Users\PC\venv\lib\site-packages\prompt_toolkit\__init__.py", line 16, in <module> from .application import Application File "C:\Users\PC\venv\lib\site-packages\prompt_toolkit\application\__init__.py", line 1, in <module> from .application import Application File "C:\Users\PC\venv\lib\site-packages\prompt_toolkit\application\application.py", line 38, in <module> from prompt_toolkit.buffer import Buffer File "C:\Users\PC\venv\lib\site-packages\prompt_toolkit\buffer.py", line 28, in <module> from .application.curr
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03-24
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