model.py

import torch
from safetensors.torch import load_file

def load_model(path='model.safetensors'):
    return load_file(path)

def atleast2of4(a, b, c, d, weights):
    """Returns 1 if at least 2 of 4 inputs are high"""
    inp = torch.tensor([float(a), float(b), float(c), float(d)])
    return int((inp @ weights['neuron.weight'].T + weights['neuron.bias'] >= 0).item())

if __name__ == '__main__':
    w = load_model()
    print('2outof4 truth table:')
    for i in range(16):
        a, b, c, d = (i >> 3) & 1, (i >> 2) & 1, (i >> 1) & 1, i & 1
        result = atleast2of4(a, b, c, d, w)
        print(f'  {a}{b}{c}{d} -> {result}')