sympy/sympy-live — pull request #46 by Anxuiz (2012-01-07 20:53:09+00:00)
Title: Use the fast option when pickling values.  Fixes issue 2587.

Before:

```
>>> f = x**2+x**-2
>>> f
2 -2
x + x
>>> f = 1/(x**2*(x**2+1))
>>> f
1
-------------
2 / 1 \
x *|---- + 1|
|/1 \ |
||--| |
|| 2| |
\\x / /
```

After:

```
>>> f = x**2+x**-2
>>> f
2 1
x + --
2
x
>>> f = 1/(x**2*(x**2+1))
>>> f
1
-----------
2 / 2 \
x *\x + 1/
```

See the issue for more details.

Issue 2587: http://code.google.com/p/sympy/issues/detail?id=2587

GCI Task: http://www.google-melange.com/gci/task/view/google/gci2011/7179246