Generate random number outside of range in python

Question

I\'m currently working on a pygame game and I need to place objects randomly on the screen, except they cannot be within a designated rectangle. Is there an easy way to do this

Answer 1

If it's the generation of random you want to avoid, rather than the loop, you can do the following:

1. Generate a pair of random floating point coordinates in [0,1]
2. Scale the coordinates to give a point in the outer rectangle.
3. If your point is outside the inner rectangle, return it
4. Rescale to map the inner rectangle to the outer rectangle
5. Goto step 3

This will work best if the inner rectangle is small as compared to the outer rectangle. And it should probably be limited to only going through the loop some maximum number of times before generating new random and trying again.