On 7/7/2010 4:31 AM, Paul McGuire wrote:

[snip interesting report on how Paul suppost pyparsing for 2.3 to 3.1]

Thank you for this.

Do you think such cross-version support would have been easier or harder if the major changes and deletions in 3.0 has been spread over several versions, such as 2.5 - 2.7. In other words, suppose the Python 3 idea never occurred to anyone and

2.5 dropped the old int division and finished the unification of int and long.

2.6 dropped classic classes and switched range, filter, and map to their iterator versions.

2.7 made unicode the text type

This is not purely a hypothetical question since the issue of spreading or bunching changes may arise again in the future.

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Terry Jan Reedy

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