How do I troubleshoot Python version issues?

I'm having trouble running my Python script. It says there's a version mismatch.

Let's start by checking which version of Python you have installed. You can do this by running python --version in your terminal.

I ran that command and it shows Python 2.7.18.

It looks like you're using Python 2, but many libraries now require Python 3. You might want to install Python 3.

How do I install Python 3 alongside Python 2?

You can download the installer from the official Python website. Make sure to select the option to add Python 3 to your PATH during installation.

Thanks! After installing, how can I switch between versions?

You can use python3 to run scripts with Python 3, while python will still point to Python 2. You can also set up a virtual environment for better management.