Python bytecode compatibility between interpreter versions

[Jon Perez]

Roger Binns wrote:

> You are considering Python .pyc files and Java class files to be
> the same thing.  They aren't.  

They're not 'the same thing'.  They are roughly analogous to one
another though, wouldn't you say?

 > pyc files are a behind the scenes
> implementation detail of one version of the Python interpreter
> that are automatically generated and maintained.

Huh??  .pyc files are an "implementation detail of the Python
interpreter"?   Care to expound further?  'Coz that sounds
pretty nonsensical...