[SciPy-dev] time to import scipy?

Ondrej Certik ondrej@certik...
Tue Mar 11 19:27:48 CDT 2008

On Tue, Mar 11, 2008 at 8:08 PM, Joseph VanAndel <vanandel@ucar.edu> wrote:
> When I import scipy (or just scipy.io) on a CentOS 5 64 bit computer, 4
>  processor, 3.00 Ghz server, with Python 2.5.1, it takes ~10 seconds of
>  elapsed time.
>  When I'm developing and testing a Python script, I typically start the
>  python interpreter dozens of times, so I concerned by how much time I
>  spend waiting for the Python to startup.
>  1) Is there anything I can do to speed up the import of scipy?
>  2) What debugging techniques do you  suggest that avoid restarting the
>  interpreter?  For example, do you routinely use ipython and
>  reload(my_module)

Which scipy version are you using? It takes 0.33s on my laptop and
scipy in Debian:

$ ipython
Python 2.4.4 (#2, Mar  3 2008, 01:16:37)
Type "copyright", "credits" or "license" for more information.

IPython 0.8.2 -- An enhanced Interactive Python.
?         -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help      -> Python's own help system.
object?   -> Details about 'object'. ?object also works, ?? prints more.

In [1]: time import scipy
CPU times: user 0.24 s, sys: 0.07 s, total: 0.31 s
Wall time: 0.33 s


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