python on mac keystroke

[Eric Texier]

I am testing python on a mac. In the python console, none of the
control as the arrow to scroll back to a preview line are
working. How can I fix this.
Thanks
eric

Following is an example:
>  python
> Python 2.4.1 (#1, Apr 22 2005, 21:15:26) 
> [GCC 3.3 20030304 (Apple Computer, Inc. build 1666)] on darwin
> Type "help", "copyright", "credits" or "license" for more information.
>>>> import sys
>>>> ^[[A
>   File "<stdin>", line 1
>     ^
> SyntaxError: invalid syntax
>>>> import os <<^?^?