As previously mentioned, copies own their data, while views do not. But how can we verify this?
Every NumPy array has a base attribute that returns None if the array owns the data. If the array does not own the data, the base attribute will reference the original object.
Print the value of the base attribute to determine whether an array owns its data.
| import numpy as np arr = np.array([1, 2, 3, 4, 5]) x = arr.copy() y = arr.view() print(x.base) print(y.base) |
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The copy returns None, while the view returns the original array. |