NumPy_practice/4.py at master · I-Trush/NumPy_practice · GitHub

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import numpy as np

a = np.array([1,2,3,4,5,6,7,8,9])

b = a

a.shape = (3,3)

print(b)
# [[1 2 3]
#  [4 5 6]
#  [7 8 9]]

#===============================================================================
a = np.array([1,2,3,4,5,6,7,8,9])

b = a.view()

a.shape = (3,3)

print(b)
# [1 2 3 4 5 6 7 8 9]
a[1] = 10
print(b)
# [ 1  2  3 10 10 10  7  8  9]
#===============================================================================
print('==============================================================================')
a = np.array([1,2,3,4,5,6,7,8,9])

b = np.array(a)

a.shape = (3,3)

a[1] = 10
print(b)

#==============================================================================
print('==============================================================================')

a = np.array([1,2,3,4,5,6,7,8,9])

b = a.copy()

a.shape = (3,3)

a[1] = 10
print(b)

#==============================================================================
print('==============================================================================')