The reason is basically described in the commit message.  See
http://code.google.com/p/sympy/issues/detail?id=1379.

I didn't realize that both numpy and scipy import test().  I'm OK to
put it back, if others agree, because you make a good point.

By the way, I found the issue number by opening GitX and commit
https://github.com/sympy/sympy/commit/5bd2e4697828f60a920ef48c6797fa30b9def947.

Aaron Meurer

On Sun, Jun 12, 2011 at 11:37 PM, Ondrej Certik <[email protected]> wrote:
> Hi,
>
> I noticed that sympy.test() was removed by this commit:
>
> https://github.com/sympy/sympy/commit/5c3bea3f43115911845c5ad8b1e6a92253c3ba91
>
> but from the commit log it is not clear to me why. I also tried to
> search the mailinglist, but didn't find anything. numpy.test(), as
> well as scipy.test() is a simple way to test the whole package.
> SymPy used to work the same way, it is easy to remember and so on. And
> it is very useful to test, that sympy actually works, after it is
> being installed (when you can't use the "./setup.py test" anymore).
>
> What was the reason to remove it? Maybe because it slows down the
> import time (this can be solved by lazy importing)? Unless there is
> some very good reason, I would vote to move it back. Let me know what
> you think.
>
> Ondrej
>
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