数据分析-NumPy深拷贝与浅拷贝

# # NumPy
# ## 深拷贝与浅拷贝学习

import numpy as np
x = np.array([-45, -31, -12, 0, 2, 25, 51, 99])
y = x
# ### 查看素组是否相同
# 引用相同
x is y
id(x)
id(y)
x == y
y[4] = 1010
y
x
tree_house = np.array([-45, -31, -12, 0, 2, 25, 51, 99])
tree_house == y
id(tree_house)
id(x)
tree_house[0] = 214
tree_house
x
tree_house == x
tree_house is x

# ## 浅拷贝
farm_house = tree_house.view()
farm_house.shape = (2, 4)
tree_house
farm_house
tree_house[3] = -111
farm_house

# ## 深拷贝
dog_house = np.copy(tree_house)
dog_house[0] = -121
dog_house
tree_house