bce.py

def binary_cross_entropy(y_true, y_pred):
    y_true = np.append(1 - y_true, y_true, axis=1)
    y_pred = np.append(1 - y_pred, y_pred, axis=1)
    bce = -(y_true * np.log(y_pred)).sum(axis=1)
    return bce