np3.py

import numpy as np

x1 = np.zeros(4)
# [0. 0. 0. 0.]

y1 = np.ones(4)
# [1. 1. 1. 1.]

x2 = np.zeros((2, 3, 4), dtype=np.int)
# [[[0 0 0 0]
#   [0 0 0 0]
#   [0 0 0 0]]

#  [[0 0 0 0]
#   [0 0 0 0]
#   [0 0 0 0]]]

z1 = np.full((2,3), 10)
# [[10 10 10]
#  [10 10 10]]

x3 = 10.0 + np.zeros((2,3))
# [[10. 10. 10.]
#  [10. 10. 10.]]

y3 = 10.0 * np.ones((2,3))
# [[10. 10. 10.]
#  [10. 10. 10.]]

x4 = np.empty((2,2))
# [[1. 1.]
#  [1. 1.]]

x4.fill(3)
# [[3. 3.]
#  [3. 3.]]

x5 = np.eye(4)#birim matris
# [[1. 0. 0. 0.]
#  [0. 1. 0. 0.]
#  [0. 0. 1. 0.]
#  [0. 0. 0. 1.]]

x6 = np.identity(5)
# [[1. 0. 0. 0.]
#  [0. 1. 0. 0.]
#  [0. 0. 1. 0.]
#  [0. 0. 0. 1.]]

x7 = np.diag([4, 7, 11, 3])
# [[ 4  0  0  0]
#  [ 0  7  0  0]
#  [ 0  0 11  0]
#  [ 0  0  0  3]]