[EMAIL PROTECTED] wrote:
to what extent should Python actually be compatible between releases?
As I understand things from years of observation, the following are fair game to changed in ways possibly backward-incompatible for specific code: bugs, detailed float behavior (which may be system-specific anyway), error messages, private interfaces, non-enforcement of documented rules, and defined implementation-dependent behavior. But Guido has been somewhat conservative about this (least so for bug fixes, I think) and sometimes put off changes even when the fault lies with questionable usages.
One fly in the ointment is that bugs (a discrepancy between doc and code) may be fixed either by changing the doc or the code, according to which embodies the design intention. So neither can be taken as gospel.
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