====== Installing another python version (2.7) with pyenv ======

===== Installing pyenv =====

<code bash>
curl https://pyenv.run | bash
</code>

===== Configuring pyenv =====

Add the following lines to your ''~/.bashrc'' file:

<code bash>
echo 'export PYENV_ROOT="$HOME/.pyenv"' >> ~/.bashrc

echo 'export PATH="$PYENV_ROOT/bin:$PATH"' >> ~/.bashrc

echo 'eval "$(pyenv init --path)"' >> ~/.bashrc

echo 'eval "$(pyenv init -)"' >> ~/.bashrc
</code>

Reload your shell configuration:

<code bash>
source ~/.bashrc
</code>

===== Installing Python 2.7 =====

<code bash>
pyenv install 2.7.18
</code>

===== Using Python 2.7 =====

To set Python 2.7 as the default version in the current directory:

<code bash>
pyenv local 2.7.18
</code>

To set Python 2.7 as the default version globally:

<code bash>
pyenv global 2.7.18
</code>

To revert to the system's Python 3.12:

<code bash>
pyenv global system
</code>

===== Verifying the version =====

<code bash>
python --version
</code>