# from itertools import product
# list1 = [2, 3, 4]
# list2 = [6, 7, 8]
# result = product(list1, list2)
# # print(list(result))
# # for i in result:
# #     print(i)
# #     print(type(i))

# # list3 = [1, 2, 3, 4]
# # list3 = [i for i in list3 if i>2]
# # print(list3)
# import numpy as np
# array = np.ones((3, 3), dtype=int)
# array = 4 - array
# print(array)
import numpy as np

array = np.array([0,1,2])
print(type(array))
print(array.T)
array.data *= -1
print(array.T)