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Yesterday I had problems launching Jupyter Notebook (all of sudden I got the notification, that python was not working properly, but before everything was working well...). So I decided to upgrade to the latest python version. And now I can launch jupyter notebook, however I get this error message:
Terminals not available (error was No module named 'winpty.cywinpty')
I followed the setps descriebd here:
But still get this error message. Is there a way, to solve this? Or does anyone have an advise?
EDIT: This is what I get when I run jupyter notebook from the cmd:
[W 14:17:04.451 NotebookApp] Terminals not available (error was No module named 'winpty.cywinpty')
[I 14:17:05.073 NotebookApp] JupyterLab extension loaded from C:\Users\Fati\AppData\Local\Programs\Python\Python39\lib\site-packages\jupyterlab
[I 14:17:05.073 NotebookApp] JupyterLab application directory is C:\Users\Fati\AppData\Local\Programs\Python\Python39\share\jupyter\lab
[I 14:17:05.323 NotebookApp] Serving notebooks from local directory: C:\Users\Fati
[I 14:17:05.324 NotebookApp] Jupyter Notebook 6.1.5 is running at:
[I 14:17:05.326 NotebookApp] http://localhost:8888/?token=8e859b3108946a8310e1e5ceed6d2186c8731261fc5161eb
[I 14:17:05.330 NotebookApp] or http://127.0.0.1:8888/?token=8e859b3108946a8310e1e5ceed6d2186c8731261fc5161eb
[I 14:17:05.331 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
[C 14:17:05.448 NotebookApp]
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Click on spotlight, type terminal to open a terminal window. Enter the startup folder by typing cd /some_folder_name . Type jupyter notebook to launch the Jupyter Notebook App The notebook interface will appear in a new browser window or tab.
Jupyter doesn't load or doesn't work in the browser Try disabling any browser extensions and/or any Jupyter extensions you have installed. Some internet security software can interfere with Jupyter. If you have security software, try turning it off temporarily, and look in the settings for a more long-term solution.
It is your expection that needs to be adapted. The Jupyter Notebook only shows what the last statement of a cell evaluates to. If you define a function, this does not evaluate to anything that could be displayed. So you can't see anything in the upper cell.
I had the same problem using Python 3.9 and resolved it by installing wheel and pywinpty using pipwin:
pip install pipwin
pip uninstall wheel
pipwin install wheel
pip uninstall pywinpty
pipwin install pywinpty
After restarting Jupyter the error is gone.
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Inspired by Scott Roberts' answer, using Python 3.9 I resolved the issue by updating pywinpty from version 0.5.7 to version 1.1.3:
pip install --upgrade pywinpty
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