sample from randomly generated numbers?

There is a program that needs to get 100 samples from 1000 randomly generated number distributed in [1, 500]. How can do I randomly get the samples?

I wrote the following:

N = 1000
x = 1 + 500 * np.random.rand(N) 
sp_x = random.sample(x, 100)

I am getting an error:

TypeError: Population must be a sequence or set.  For dicts, use list(d).