Python numpy boolean 数组不是整个列和行

Question

I want to apply the NOT operation on whole columns/rows of a boolean Numpy array . Is this possible with Numpy?

matrix = np.array([[False for i in range(3)] for j in range(2)])
# Initial
# [False, False, False]
# [False, False, False]

matrix[:,1].not() # Something like this
# After not operation on column 1
# [False, True, False]
# [False, True, False]

Answer 1

This should do the trick, see here

matrix[:, 1] = np.logical_not(matrix[:, 1])