How to combine several related for loops into 2 for loops?

[python101]

I begin to learn graphic in python.

The problem I'm encountering that is when I want to repeat an object (circle, rectangle, etc) I have to do with several repeated for loops (with little bit changing).

Assuming X is rectangle, O is circle. For each line I have to use a for loop. How can I combine them? I need the idea, not the source code.

XOXOXOXOXOXOXOXO
OXOXOXOXOXOXOXOX
XOXOXOXOXOXOXOXO
OXOXOXOXOXOXOXOX
XOXOXOXOXOXOXOXO

[ghostdog74]

print "*" * 10 
 

use it as example to create your pattern

[bartonc]

In the outer loop, keep track of the line number so you may test for odd/even line #:

>>> for i in range(10):
...     if i % 2:  #modulo test for odd/even
...         print i
...         
1
3
5
7
9
>>> 

[python101]

In the outer loop, keep track of the line number so you may test for odd/even line #:

>>> for i in range(10):
...     if i % 2:  #modulo test for odd/even
...         print i
...         
1
3
5
7
9
>>> 

Thank you very much, now I got it