[js8]

There has been several other events like that (Django, Pandas and data science..). I don't think Python's popularity can be ascribed to any single event, it just happens to be a language that is reasonably close to pseudocode with an excellently thought-out (I mean best in the industry) standard library. Python is practical, first and foremost. That's why it won, unlike other languages it doesn't really have an ideological agenda.

[pjmlp]

Zope predates all of those, and slowly as you say people got interested and started using it for other stuff, like being a better Perl.

Python has an agenda as well, Guido has said multiple times it was a language designed for teaching programming, and one of the reasons Zen of Python came early on.