working ipython session 2.6.1

Python 2.6.1 (r261:67515, Jun 24 2010, 21:47:49)
Type "copyright", "credits" or "license" for more information.

IPython 0.11 -- An enhanced Interactive Python.
?         -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help      -> Python's own help system.
object?   -> Details about 'object', use 'object??' for extra details.

In [1]: from time import sleep

In [2]: def sleep2(time):
   ...:     def sleep3():
   ...:         sleep(time)
   ...:         return time
   ...:     return sleep3
   ...:

In [3]: sleep2(2)
Out[3]: <function __main__.sleep3>

In [4]: sleep2(2)()
Out[4]: 2

In [5]: [sleep2(i) for i in range(1,5)]
Out[5]:
[<function __main__.sleep3>,
 <function __main__.sleep3>,
 <function __main__.sleep3>,
 <function __main__.sleep3>]

In [6]: