[Python-Dev] (time) PEP 418 glossary V2 (original) (raw)

Victor Stinner victor.stinner at gmail.com
Tue Apr 24 12:47:27 CEST 2012

Precision ---------

This is another tricky term,

This is a good reason why it is no more used in the PEP :-)

Note that "precision" as reported by the clock itself may use yet another definition, and may differ between clocks.

Some C function provides the frequency of the clock (and so its resolution), or directly the resolution, but I don't know any function providing the precision.

I thought that clock_getres() is the precision, but I was wrong. clock_getres() is really the resolution announced by the OS, even if the OS may be pessimistic (and so wrong, ex: OpenBSD and Solaris). But Python should not try to workaround OS "bugs".

Victor

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