dmitrey wrote: > Is the genutils module not included to standard CPython edition? > First of all I'm interested in what is the best way for latter, for to > users not need installing anything else. > Thx, D. > > > Fernando Perez wrote: >> On 5/12/07, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: >> >>> It depends on what you're aiming at. If you want to compare different >>> implementations of some expressions and need to know their average >>> execution times you should use the timeit module. If you want to have >>> the full execution time of a script, time.time (call at the begin and >>> end, compute the difference, gives the elapsed time) and time.clock >>> (under linux the cpu clock time used by the process) are the methods >>> you want. >>> >> Don't use time.clock, it has a nasty wraparound problem that will give >> you negative times after a while, and effectively junk for very long >> running processes. This is much safer (from IPython.genutils): >> >> def clock(): >> """clock() -> floating point number >> >> Return the *TOTAL USER+SYSTEM* CPU time in seconds since the start of >> the process. This is done via a call to resource.getrusage, so it >> avoids the wraparound problems in time.clock().""" >> >> u,s = resource.getrusage(resource.RUSAGE_SELF)[:2] >> return u+s >> >> >> The versions for only user or only system time are obvious, and >> they're already in IPython.genutils as well: >> >> http://projects.scipy.org/ipython/ipython/browser/ipython/trunk/IPython/genutils.py#L165 >> >> Cheers, >> >> f >> _______________________________________________ >> Numpy-discussion mailing list >> Numpy-discussion@scipy.org >> http://projects.scipy.org/mailman/listinfo/numpy-discussion >> >> >> >> Have you looked at timeit?
25.9 timeit -- Measure execution time of small code snippets New in version 2.3. This module provides a simple way to time small bits of Python code. It has both command line as well as callable interfaces. It avoids a number of common traps for measuring execution times. See also Tim Peters' introduction to the ``Algorithms'' chapter in the Python Cookbook, published by O'Reilly. The module defines the following public class: class Timer( [stmt='pass' [, setup='pass' [, timer=<timer function>]]]) Class for timing execution speed of small code snippets. Colin W. _______________________________________________ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
