Michael Droettboom wrote: > All of those calls to "open" are being generated from the pytz import -- > which is why pytz seems like the likely candidate. Is it possible you > have pytz installed as a compressed egg, or on a remote disk, or > something that may be causing a file reading penalty?
Mike, The pytz import time, at nearly 1/3 of the total mpl import time, is crazy even on linux, given that it adds only a tiny bit of functionality, and as far as I can see, even that is only rarely used. Therefore I have committed a change so that it is imported only if and when it is required. Our examples still work, after I modified one that was trying to import timezone from mpl.dates (although it was not actually using timezone). This probably illustrates the way in which this change may break some user code: user programs requiring pytz.timezone and pytz.tzinfo will have to import them directly instead of getting them from mpl.dates. I hope this is acceptable; importing them from mpl.dates seems like bad practice anyway, since mpl.dates was not using them or modifying them but was just passing them on from pytz. I suspect pytz could be redesigned so that it would not be so horrendously slow to import, but I am not going to tackle that. After the change: efir...@manini:~$ time python -c "import pylab" real 0m0.441s user 0m0.372s sys 0m0.064s Before the change: efir...@manini:~$ time python -c "import pylab" real 0m0.626s user 0m0.480s sys 0m0.124s Again, this is recent linux on a 3-year-old laptop. Eric > > As Eric said, make sure you time the "import pytz" in a clean Python > session -- if a module is already imported in the Python interpreter, it > won't be reimported. > > Mike > > ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
