How to fix pip hanging on uninstalling sqlalchjemy

Question

In Python 2.7.11 under Windows I have installed sqlalchemy into a virtual environment. Now, when I try to uninstall it via

pip uninstall sqlalchemy

pip hangs when listing the following lines:

.
.
.
c:\venv\lib\site-packages\sqlalchemy\util\langhelpers.py
c:\venv\lib\site-packages\sqlalchemy\util\langhelpers.pyc
c:\venv\lib\site-packages\sqlalchemy\util\queue.py
c:\venv\lib\site-packages\sqlalchemy\util\queue.pyc
c:\venv\lib\site-packages\sqlalchemy\util\topological.py
c:\venv\lib\site-packages\sqlalchemy\util\topological.pyc

This happens repeatedly, when I cancel the uninstall command and issue it again, even after system restart.

What can I do to make pip continue?

Are you using the latest version of pip? – Yeg Aug 09 '16 at 07:07 — Yeg, Aug 09 '16 at 07:07

score 30 · Accepted Answer · answered Jan 26 '17 at 10:57

30

Looks like pip uninstall prompts you with "Do you want to continue (Y/N)?", but that is not visible in cygwin or git bash for some reason.

Typing "y" and pressing enter makes the pip uninstall proceed.

answered Jan 26 '17 at 10:57

johan.blumenberg

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Sounds like a great explanation! Will test it next time I come across this issue on uninstall on Windows. – halloleo Jan 27 '17 at 02:35
Checked on uninstalling ansible via pip. It really works, thanks :) – Dmitry Feb 23 '17 at 17:36
1

i was able to confirm that this fixed it, it is after pressing the 'y' that the prompt "Do you want to continue (Y/N)?" appears, im using git bash – ianace Jul 10 '17 at 04:03
Well done for understanding this, do you know how to fix the environment of git bash to show these prints? – e271p314 Jul 17 '17 at 17:07
1

In Git Bash you can prefix the command with 'winpty ' to make the prompt show up properly. – Krenair Feb 14 '18 at 17:14

David Espart · Answer 2 · 2020-01-21T14:31:45.120

22

If you don't want to type "y" (or you want to run it in a script), use

pip uninstall sqlalchemy --yes

edited Jan 21 '20 at 14:31

answered Mar 27 '17 at 13:39

David Espart

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Thanks, you saved my day, Bro. I hope this should be accepted as the correct answer. – Kumar KS Feb 11 '20 at 12:31
1

When trying this in jupyter, this is the solution (that worked for me). Otherwise it hung – James Oliver Apr 18 '21 at 09:53
It worked for me in Azure Pipeline and saved me a lot of time. – Nikunj Kakadiya Apr 06 '22 at 18:24

score 0 · Answer 3 · edited May 23 '17 at 12:34

I was not able to solve why pip hung on uninstall; however through another stackoverflow answer I realised that I can remove the package manually with:

del C:\venv\Lib\site-packages\sqlalchemy
del C:\venv\Lib\site-packages\SQLAlchemy-1.0.14.dist-info

I checked for mentions of sqlalchemy in any *.pth file too, but there were no occurrences.

In any case, pip freeze revealed that the package was properly gone.

score -1 · Answer 4 · edited Jun 14 '18 at 15:06

-1

I tried all steps but finally this works for me:

pip install --ignore-installed ${PACKAGE_NAME}

edited Jun 14 '18 at 15:06

pushkin

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answered Jun 14 '18 at 14:44

DAA

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How to fix pip hanging on uninstalling sqlalchjemy

4 Answers4