def _findmax(array):
    maxx = delta
    for i in array:
        if (np.max(i) > maxx):
            maxx = np.max(i)
    return maxx
def _findmax(array):
    maxx = delta
    for i in array:
        if (np.max(i) > maxx):
            maxx = np.max(i)
    return maxx