Question: Running the following

```
poetry shell

```

returns the following error

```
/home/harshagoli/.poetry/lib/poetry/_vendor/py2.7/subprocess32.py:149: RuntimeWarning: The _posixsubprocess module is not being used. Child process reliability may suffer if your program uses threads.                                                                                                                                                                                    
  "program uses threads.", RuntimeWarning)                                                                                                                                                    
The currently activated Python version 2.7.17 is not supported by the project (^3.7).                                                                                                         
Trying to find and use a compatible version.                                                                                                                                                  
Using python3 (3.7.5)                                                                                                                                                                         
Virtual environment already activated: /home/harshagoli/.cache/pypoetry/virtualenvs/my-project-0wt3KWFj-py3.7

```

How can I get past this error? Why doesn't this command work?

Answer: 
`poetry shell` is a really buggy command, and this is often talked about among the maintainers. A workaround for this specific issue is to activate the shell manually. It might be worth aliasing the following

```
source $(poetry env info --path)/bin/activate

```

so you need to paste this into your `.bash_aliases` or `.bashrc`

```
alias acpoet="source $(poetry env info --path)/bin/activate"

```

Now you can run `acpoet` to activate your poetry env (don't forget to source your file to enable the command)
It's similar to activating a normal virtual environment. But we need to find out path of the poetry virtual env.

We can find the path via `poetry env info --path`

```
source $(poetry env info --path)/bin/activate

```

Explained in [this poetry demo](https://python-poetry.org/docs/basic-usage/#activating-the-virtual-environment).