Language change and code breaks

Guido van Rossum guido at
Sat Jul 14 11:22:14 EDT 2001

Peter Hansen <peter at> writes (after much good stuff about

> After the transition period, screw the professional programmers 
> who won't take the time to modify their existing code and yet 
> who selfishly insist that their wonderful program *must* be
> allowed to continue running under the new Python without 
> problem.

Well, I don't know about you, but *I* am reluctant to say "screw you"
to all those people who depend on Python script written by
professional programmers who no longer work there.

I also don't want to fork the code base.  There are *still* folks
using Perl4 scripts who can't upgrade.  I don't want to do that to the

So indeed, we'll need to be *very* careful with this kind of
transition, providing tools, warnings, anything we can think of.

--Guido van Rossum (home page:

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