Question

i have these:

    a=sc.array([0,1])
    b=sc.array([1,0])
    c=sc.array([0,-1])
    d=sc.array([-1,0])
    orientation_list=(sc.array([a,b,c,d])).tolist()
    #---------------------------------------------------------------------

    #i am trying sth like this
    tab=sc.random.random_integers(orientation_list)

I want the ‘tab’ to retrieve randomly one of the above arrays.For example ‘tab=[0,1]’
Is there a way?

Answer 1

>>> import random
>>> tab = random.choice([[0, 1], [1, 0], [0, -1], [-1, 0]])
>>> tab
[-1, 0]

Your code creates a bunch of NumPy arrays, then a list of these NumPy arrays, then transforms this list itself into a NumPy array and finally transforms everything back to a list. The code above skips all those (rather pointless) conversions and uses Python’s built-in random module instead of NumPy’s numpy.random.