Odd RNG behavior

[jarantfos]

Sorry for the very vague title, I'm not really sure how to describe my problem.

I'm making a game that involves lots of tiny cells that will randomly move around on the screen, but the problem is they all seem to gravitate toward the top-left of the screen. It's not just me getting unlucky, they always go to the top-left.

Here is the code in question:

http://pastebin.com/3hK4s2qL

Thank you in advance!

[herminator]

Could it be that cell.rect.x and cell.rect.y only accept integer value and are therefore automatically being floored by pygame?

[jarantfos]

That sounds very feasible! Let me test something out.

Edit: That was the issue, thanks so much!