Please describe the problem:
Gedit's default Python console plugin prevents the user from inputting a
code block such as if, else, try, def, etc. This is because the plugin passes
each line to Python and not each block.

Steps to reproduce:
1. Load the plugin and open the console window.
2. Type in "if True:"
3. Press enter.

Actual results:
The plugin passes the line as a command. This results in an error;

Traceback (most recent call last):

+ Trace 80413

Expected results:
The plugin should ask for the next line of the code block until the user enters
a blank line. Like so:

>>> if True:
...   print "Done"
... 
Done

Does this happen every time?
Yes

Other information:
I first found this bug in Rhythmbox:
http://bugzilla.gnome.org/show_bug.cgi?id=366696
I was recommended to file a report here as well, due to Rhythmbox recycling the code from Gedit.