William Stein wrote: > Anybody know the answers? > > > ---------- Forwarded message ---------- > From: Anusha Sekar <[EMAIL PROTECTED]> > Date: Thu, May 1, 2008 at 1:28 PM > Subject: Question about time output > To: William Stein <[EMAIL PROTECTED]> > > > Prof. Stein, > > I have a couple of questions about the time command. > > 1. Is it possible to output more digits, or to output in micro seconds? > 2. How do you store the output of the command as a number if you are > trying to plot time versus n for some calculation which involves n? > 3. Where can I find the help document for this command? When I type > time?, I get back an error saying that time is not defined. I have > tried looking in the Sage docs as well as the python docs.
If you are using the command line, you can use the %time or %timeit commands, which are ipython commands (i.e., they are not Sage-specific). If you are using the notebook, %time works, but %timeit doesn't (William, I thought you fixed this a while ago, but it hasn't seemed to work). The help for %time or %timeit (i.e., typing "%time?" or "%timeit?") at the command line gives several options. In particular, %time has an option to increase the precision and %timeit generally will report things down into the nanosecond range (by running a command several times and taking an average time, if I recall right). Also, %timeit? points to the python timeit module, which sounds like it could fulfill the things you want. See http://diveintopython.org/performance_tuning/timeit.html or http://docs.python.org/lib/module-timeit.html for examples. Thanks, Jason --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
