Google search result inconsistencies due to AI

Here is a beautiful example of such an inconsistency!

My first Google search result

My immediate related follow up Google search result

What happened?

1. When I first queried about how to use Python to export a PDF file as a text file, Google AI generated a code example using import PyPDF2
2. Since I knew there was also a library called pypdf, I was curious what the difference was. 
   Well Google AI then declared that PyPDF2 was actually deprecated and merged into pypdf.