Poetry installed but `poetry: command not found` on Google Colab - google-colaboratory

Question

I was following this github, where it gave me the following instructions:
Project was built with poetry (https://python-poetry.org/), so it is
recommended to get poetry first to install all the dependencies. After
poetry installation you can simply clone this repo, navigate to the
root directory, and run:
From the website I ran this command:
!curl -sSL https://install.python-poetry.org | python3 -
After executing this I get the following prompt:
Retrieving Poetry metadata
# Welcome to Poetry!
This will download and install the latest version of Poetry,
a dependency and package manager for Python.
It will add the `poetry` command to Poetry's bin directory, located at:
/root/.local/bin
You can uninstall at any time by executing this script with the --uninstall option,
and these changes will be reverted.
Installing Poetry (1.1.15)
Installing Poetry (1.1.15): Creating environment
Installing Poetry (1.1.15): Installing Poetry
Installing Poetry (1.1.15): Creating script
Installing Poetry (1.1.15): Done
Poetry (1.1.15) is installed now. Great!
To get started you need Poetry's bin directory (/root/.local/bin) in your `PATH`
environment variable.
Add `export PATH="/root/.local/bin:$PATH"` to your shell configuration file.
Alternatively, you can call Poetry explicitly with `/root/.local/bin/poetry`.
You can test that everything is set up by executing:
`poetry --version`
Thus, I ran the following command next:
!export PATH="/root/.local/bin:$PATH"
This gave no issues. But, after running poetry --version. It gave me the following error prompt:
---------------------------------------------------------------------------
NameError Traceback (most recent call last)
<ipython-input-25-4666e7fa95ae> in <module>
----> 1 poetry --version
NameError: name 'poetry' is not defined
Can anyone help how to run this? I am new to colab. I got a similar question here. But, it is not working in my case.
Using something like this: !/root/.local/bin/poetry --version is working, but how do I add that $PATH in the shell configuration file in colab, so I don't have to call it by using the path before it every time?