[Tutor] python time
davea at ieee.org
Thu Nov 26 12:51:02 CET 2009
> How does python get the time in microseconds? (In other words, how would I get it if python (like some other languages) would provide time in whole seconds only?)
> Thank you,
> la vita e estrany
You need to supply more information about your environment, and maybe
the reason for asking. Since you don't, I'll make some guesses.
If you're trying to do extremely fine delta-time measurements, there is
a Pentium instruction to fetch the number of clock cycles. You'd get
this in assembler language, or with _asm in C code.
If you're on Windows, there is a NtQuerySystemTime() function exported
by ntdll.dll. It fetches a large integer specifying the number of
100-ns intervals since some epoch time in 1601. It's been deprecated,
however, in favor of GetSystemTimeAsFileTime(), available in Win2k and
later, and exported from kernel32.dll
There are others, but I can't find them at the moment.
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