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How to make an array immutable?
How to make an array immutable?
This recipe helps you make an array immutable
Recipe Objective
While operating over arrays, some arrays might become keyvalues that must not be altered throughout the processing. So it's better if we can make the array fixed or immutable.
So this recipe is a short example on how to make an array immutable. Let's get started.
Step 1 - Import the library
import numpy as np
Let's pause and look at these imports. Numpy is generally helpful in data manipulation while working with arrays. It also helps in performing mathematical operation.
Step 2 - Generating a random array
a = np.random.random(10)
We have generated a random array of size 10.
Step 3 - Making the array immutable
a.flags.writeable = False
a[0] = 1
Here, we are making the array unwritable.
Step 5 - Let's look at our dataset now
Once we run the above code snippet, we will see a ValueError being thrown stating assignment destination is read-only
Scroll down to ipython file to visualize the error.
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