ModuleNotFoundError: No module named 'cleo' after poetry self:update

• 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 version and name: GNU/Linux 4.18.7-1-default, openSUSE Tumbleweed
• Poetry version: 0.12.4
• Link of a Gist with the contents of your pyproject.toml file: Irrelevant

Issue

I have updated poetry using the command:

$ poetry self:update
Updating to 0.12.4                                                                                                                                                      
  - Getting dependencies
  - Vendorizing dependencies
  - Updating poetry

poetry (0.12.4) successfully installed!

Then if run any command I get this:

$ poetry -vvv --version
Traceback (most recent call last):
  File "/home/rominf/.local/bin/poetry", line 7, in <module>
    from poetry.console import main
  File "/home/rominf/.pyenv/versions/3.6.5/envs/pendulum/lib/python3.6/site-packages/poetry/console/__init__.py", line 1, in <module>                                  
    from .application import Application
  File "/home/rominf/.pyenv/versions/3.6.5/envs/pendulum/lib/python3.6/site-packages/poetry/console/application.py", line 6, in <module>                               
    from cleo import Application as BaseApplication
ModuleNotFoundError: No module named 'cleo'

I have tried to install cleo with pip, but it didn’t help. The only thing that helped me is the poetry installation using pip.

[crgarcia12]

I leave this comment in here because it was the first search result I got: If you are running on Wndows 10 + Python 3.8, then you need to install the preview version that contains a fix for the issue:

Delete the installation removing the .poetry folder from C:\Users\<your user>

Then run this command: curl -sSL https://raw.githubusercontent.com/sdispater/poetry/master/get-poetry.py | POETRY_PREVIEW=1 python

Or, in PowerShell, you can run this:

Invoke-WebRequest -UseBasicParsing https://raw.githubusercontent.com/sdispater/poetry/master/get-poetry.py -OutFile get-poetry.py
python .\get-poetry.py --preview
Remove-Item .\get-poetry.py
$env:Path += ";$env:USERPROFILE\.poetry\bin"

[hoishing]

@PRINCEOYEBOLA since poetry 1.1.12 is missing some dependencies in python3.10.1 on Windows. You may work around by installing them pip install cleo tomlkit poetry.core requests cachecontrol cachy html5lib pkginfo virtualenv lockfile