run python command line interpreter with imports loaded automatically
<p>I would like to play around in the python interpreter but with a bunch of imports and object setup completed. Right now I'm launching the interpreter on the command line and doing the setup work every time.  Is there any way to launch the command line interpreter with all the initialization work done?</p>

<p>Ex:</p>

<pre><code># Done automatically.
import foo
import baz
l = [1,2,3,4]
# Launch the interpreter.
launch_interpreter()
&gt;&gt; print l
&gt;&gt; [1,2,3,4]
</code></pre>
