python – Generating binary sequences without repetition

I am trying to generate sequences containing only 0‘s and 1‘s. I have written the following code, and it works.

import numpy as np

batch = 1000
dim = 32

while 1:
    is_same = False
    seq = np.random.randint(0, 2, (batch, dim))
    for i in range(batch):
        for j in range(i + 1, batch):
            if np.array_equal(seq(i), seq(j)):
                is_same = True
    if is_same:

My batch variable is in the thousands. This loop above takes about 30 seconds to complete. This is a data generation part of another for loop that runs for about 500 iterations and is therefore extremely slow. Is there a faster way to generate this list of sequences without repetition? Thanks.

The desired result is a collection of batch_size number of sequences each of length dim containing only 0s and 1s such that no two sequences in the collection are the same.