I don't use much python.
That's strange. Half of GUI applications, that I use under Ubuntu, is written in Python.
Do you use at least once application written in python? Does it ask you upgrade python?
Installing new versions is generally pretty simple
I use perlbrew for Perl and rvm for Ruby.
I think OP was about "end users". So your experience upgrading your own programmer's tools is irrelevant.

In reply to Re^4: Stop suggesting to upgrade perl by vsespb
in thread Stop suggesting to upgrade perl by vsespb

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