import numpy as np

print([[1, 2, 3], [2, 3, 4]])
t1 = np.array([[1, 2, 3], [2, 3, 4]])
print(t1)
t2 = np.zeros((3, 4))
print(t2)
t3 = np.ones((3, 4))
print(t3)
t4 = np.empty((4, 5), dtype=int)
print(t4)
t5 = np.arange(1, 8, 1)
print(t5)
t6 = np.linspace(1, 9, 3)
print(t6)
t7 = np.random.rand(3, 5)
print(t7)
