[Python-Dev] Compatibility between Python 2.3.x and Python 2.4.x (original) (raw)

Phillip J. Eby pje at telecommunity.com
Fri Sep 16 00:09:36 CEST 2005

At 05:44 PM 9/15/2005 -0400, Raymond Hettinger wrote:

[Neal Norwitz] > That shows the magic number changing. You will need to read CVS logs > to figure out why. It's possible the numbers don't really need to > change.

The new LISTAPPEND opcode won't run on Py2.3.

The OP asked about upgrading existing 2.3 .pyc/.pyo files to 2.4, not downgrading to 2.3, so this doesn't affect them, except insofar as it means the magic number is different.

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