The way I (somewhat hazily) remember it, Python was mainly competing with Perl as a scripting language, not Ruby as an application/web language. I started hearing about Ruby years later when Ruby on Rails drove the Web 2.0 movement, but that feels like a different era to me. Eric S. Raymond wrote an article[1] in 2000 about his experience trying Python after spending a lot of time with Perl. I'll quote some of it her…
Part of my question is why Python was used as a successor to Perl and not Ruby, but it sounds like Python was established as a competitive scripting language 5 years before people were talking about Ruby.
I can’t find it now, but there was another comment that pointed out that the languages weren’t contemporaries.