How can you turn an index array into a mask array in Numpy?

Question

Is it possible to convert an array of indices to an array of ones and zeros, given the range? i.e. [2,3] -> [0, 0, 1, 1, 0], in range of 5

I\'m trying to automate so

Answer 1

As requested, here it is in an answer. The code:

[x in index_array for x in range(500)]

will give you a mask like you asked for, but it will use Bools instead of 0's and 1's.