[Python-Dev] proposal: add basic time type to the standard library (original) (raw)

Jim Fulton jim@zope.com
Tue, 26 Feb 2002 09:05:32 -0500

Jeremy Hylton wrote:

>>>>> "TP" == Tim Peters <tim.one@comcast.net> writes: ... Also, it may not be necessary to have a TimeStamp object in ZODB 4. There are three uses for the timestamp: tracking how recently an object was used for cache evication,

Time-stamp isn't used for this.

providing a last modified time to users, and as a simple version number.

This is certainly a hack.

In ZODB 4, the cache eviction may be done quite differently.

Yup, or, with Toby Dickenson's patches, in ZODB 3. :)

The version number may be a simple int. The last mod time will not be provided for each object; instead, users will need to define this themselves if they care about it. If they define it themselves, they'd probably use a DateTime object, but we'd care much less about how small it is.

The TimeStamp type will still be useful for storage implementations that want compact time strings.

I could imagine al alternate implementation that conformed to the new interface and retained the compact representation.

Jim

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