<p>In many symbolic math systems, such as Matlab or Mathematica, you can use a variable like <code>Ans</code> or <code>%</code> to retrieve the last computed value. Is there a similar facility in the Python shell?</p>

Underscore.
```
```
>>> 5+5
10
>>> _
10
>>> _ + 5
15
>>> _
15
```
```