[New-bugs-announce] [issue42275] Jupyter Lab Terminals not available (error was No module named 'winpty.cywinpty')

[shakir_juolay]

New submission from shakir_juolay <shakir_juolay at yahoo.com>:

I get the below message when I run Jupyter Lab

D:\Users\sjuolay>jupyter lab
[W 12:37:50.862 LabApp] Terminals not available (error was No module named 'winpty.cywinpty')
[I 12:37:51.170 LabApp] JupyterLab extension loaded from d:\users\sjuolay\documents\python\python39\lib\site-packages\jupyterlab
[I 12:37:51.171 LabApp] JupyterLab application directory is d:\users\sjuolay\documents\python\python39\share\jupyter\lab
[I 12:37:51.300 LabApp] Serving notebooks from local directory: D:\Users\sjuolay
[I 12:37:51.301 LabApp] Jupyter Notebook 6.1.4 is running at:
[I 12:37:51.301 LabApp] http://localhost:8888/?token=9a64c8f9a15b970ecc775090c4e5b8c90677f1456a83a932
[I 12:37:51.301 LabApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
[C 12:37:51.330 LabApp]

    To access the notebook, open this file in a browser:
        file:///D:/Users/sjuolay/AppData/Roaming/jupyter/runtime/nbserver-7928-open.html
    Or copy and paste one of these URLs:
        http://localhost:8888/?token=9a64c8f9a15b970ecc775090c4e5b8c90677f1456a83a932
[I 12:37:53.917 LabApp] Build is up to date


And when I run the below from Python IDLE I get

>>> import winpty
Traceback (most recent call last):
  File "<pyshell#0>", line 1, in <module>
    import winpty
  File "D:\Users\sjuolay\Documents\Python\Python39\lib\site-packages\winpty\__init__.py", line 11, in <module>
    from .ptyprocess import PtyProcess
  File "D:\Users\sjuolay\Documents\Python\Python39\lib\site-packages\winpty\ptyprocess.py", line 21, in <module>
    from .winpty_wrapper import PTY, PY2
  File "D:\Users\sjuolay\Documents\Python\Python39\lib\site-packages\winpty\winpty_wrapper.py", line 12, in <module>
    from .cywinpty import Agent
ModuleNotFoundError: No module named 'winpty.cywinpty'


Software Details
Python 3.9.0 (tags/v3.9.0:9cf6752, Oct  5 2020, 15:34:40) [MSC v.1927 64 bit (AMD64)] on win32
Jupyter Lab 2.2.9
pywinpty 0.5.7


Any idea how much of an impact the error has on Jupyter Lab, since it is launched in browser? How to fix this?

----------
components: Library (Lib)
messages: 380443
nosy: shakir_juolay
priority: normal
severity: normal
status: open
title: Jupyter Lab Terminals not available (error was No module named 'winpty.cywinpty')
type: behavior
versions: Python 3.9

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue42275>
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