ModuleNotFoundError: No module named 'cleo'

[gh640]

• I am on the latest Poetry version.
• I have searched the issues of this repo and believe that this is not a duplicate.
• If an exception occurs when executing a command, I executed it again in debug mode (-vvv option).

• OS: Mac OS X / 10.14.6 / 18G5033
• Poetry version: 1.1.0
• Python version: 3.8

Issue

After updating poetry to 1.1.0 with poetry self update, it stopped working. I cannot run even poetry --version now.

$ poetry self update
Updating to 1.1.0
 - Downloading poetry-1.1.0-darwin.tar.gz 100%

Poetry (1.1.0) is installed now. Great!

$ poetry
Traceback (most recent call last):
  File "/Users/username/.poetry/bin/poetry", line 12, in <module>
    from poetry.console import main
  File "/Users/username/.poetry/lib/poetry/console/__init__.py", line 1, in <module>
    from .application import Application
  File "/Users/username/.poetry/lib/poetry/console/application.py", line 3, in <module>
    from cleo import Application as BaseApplication
ModuleNotFoundError: No module named 'cleo'

$ poetry --version
Traceback (most recent call last):
  File "/Users/username/.poetry/bin/poetry", line 12, in <module>
    from poetry.console import main
  File "/Users/username/.poetry/lib/poetry/console/__init__.py", line 1, in <module>
    from .application import Application
  File "/Users/username/.poetry/lib/poetry/console/application.py", line 3, in <module>
    from cleo import Application as BaseApplication
ModuleNotFoundError: No module named 'cleo'

I searched for an issue but couldn't find one. #2991 was for a different problem.

[gh640]

poetry -vvv generates the following output:

$ poetry -vvv
Traceback (most recent call last):
  File "/Users/username/.poetry/bin/poetry", line 12, in <module>
    from poetry.console import main
  File "/Users/username/.poetry/lib/poetry/console/__init__.py", line 1, in <module>
    from .application import Application
  File "/Users/username/.poetry/lib/poetry/console/application.py", line 3, in <module>
    from cleo import Application as BaseApplication
ModuleNotFoundError: No module named 'cleo'

[gh640]

I needed to use Poetry soon and re-installed it.

python get-poetry.py --uninstall
python get-poetry.py

The error has gone.

I hope this helps other people.

[laike9m]

Same here

[Hultner]

I had to do the same thing after adding python 3.9 to my pyenv and update poetry, re-install was the only thing that would do it.

[MamadouSDiallo]

I had the same problem after updating to python 3.9 but the issue went away after "pip install --user poetry". Note that I use python through pyenv.

[paulmattheww]

I needed to use Poetry soon and re-installed it.

python get-poetry.py --uninstall
python get-poetry.py

The error has gone.

I hope this helps other people.

Of course you'll need the file as such

curl -sSL https://raw.githubusercontent.com/python-poetry/poetry/master/get-poetry.py | python -

[laike9m]

This still happens

[tomjohnburton]

I'm getting this error running ubuntu all of a sudden

[plyte]

I'm getting this error running ubuntu all of a sudden

I'm getting the same after using:
curl -sSL --proxy $https_proxy https://raw.githubusercontent.com/sdispater/poetry/master/get-poetry.py | python

[tomjohnburton]

For me, changing the python version back to 3.9.7 fixed the issued. I was running poetry in a Docker container. Using this as the base fixed it:

FROM python:3.9.7-bullseye
...

[plyte]

For me, changing the python version back to 3.9.7 fixed the issued. I was running poetry in a Docker container. Using this as the base fixed it:

FROM python:3.9.7-bullseye
...

Ah ok I'll give that shot. I've been using the python:slim container which I believe is on 3.9.5

[plyte]

For me, changing the python version back to 3.9.7 fixed the issued. I was running poetry in a Docker container. Using this as the base fixed it:

FROM python:3.9.7-bullseye
...

Ah ok I'll give that shot. I've been using the python:slim container which I believe is on 3.9.5

Looks like that fixed it! Thanks @tomjohnburton

[anpr]

I use python with pyenv, and experienced the same issue if I tried to run poetry with Python 3.10.

I fixed it with

$ pyenv install 3.9.9   # if you haven't done so already
$ curl -sSL https://raw.githubusercontent.com/python-poetry/poetry/master/get-poetry.py > get-poetry.py
$ pyenv local 3.9.9
$ python get-poetry.py --uninstall
$ python get-poetry.py

Then I manually edited ~/.poetry/bin/poetry to use python 3.9.9 all the time:

#!/Users/anpr/.pyenv/versions/3.9.9/bin/python

Seems like a hack, and there is maybe a bug in poetry if it's run with Python 3.10?

[ben-hampson]

@anpr I struggled to get this working on Python 3.10 too. The following worked:

pip install cleo tomlkit poetry.core requests cachecontrol cachy html5lib pkginfo virtualenv lockfile

[nazmicancalik]

@ben-hampson Same for me. All of a sudden my poetry also stopped working, I was running system update on arch at the time and it updated python from 3.9 to 3.10 and I think this was the reason why it stopped working. I installed the required packages like you and it started working again.

[SamCrabtree]

@anpr I struggled to get this working on Python 3.10 too. The following worked:

pip install cleo tomlkit poetry.core requests cachecontrol cachy html5lib pkginfo virtualenv lockfile

Thank you @ben-hampson . After searching for a solution for over 2 hours this seemed to do the trick!

[moattarwork]

@anpr I struggled to get this working on Python 3.10 too. The following worked:
pip install cleo tomlkit poetry.core requests cachecontrol cachy html5lib pkginfo virtualenv lockfile

Thank you @ben-hampson . After searching for a solution for over 2 hours this seemed to do the trick!

It is working but if you spawn a new shell, that will be the same and you need to run the command again

[rosbly]

I got this error and though it was a bug, until I figured out I was within a Poetry shell/virtual env (which is automatically activated by Pycharm).

Everything works fine outside Poetry shell.

$ poetry run poetry --version
Traceback (most recent call last):
  File "/home/syr/.poetry/bin/poetry", line 17, in <module>
    from poetry.console import main
  File "/home/syr/.poetry/lib/poetry/console/__init__.py", line 1, in <module>
    from .application import Application
  File "/home/syr/.poetry/lib/poetry/console/application.py", line 3, in <module>
    from cleo import Application as BaseApplication
ModuleNotFoundError: No module named 'cleo'

$ poetry --version
Poetry version 1.1.12

Maybe Poetry should do like Pipenv: detect this situation, print a warning, and execute outside the virtualenv?
This is very unlikely anyone would want to execute Poetry within Poetry (except maybe for Poetry developers, in which case some opt-in option could be handy).

[vuongtuha]

@ben-hampson thank you. Solve after 1 year!

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