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Creation in NumPy

Creation in NumPy

This lesson helps you learn how to create a NumPy array in different ways.

For using numpy, import the numpy library.

import numpy

Create an Array of Zeros

To create a numpy array containing zeros, write: np.zeros(size)

To create an array of size 9 write: np.zeros(9)

Here is how this array is stored in memory:

   ┌───┬───┬───┬───┬───┬───┬───┬───┬───┐
 Z │ 0 │ 0 │ 0 │ 0 │ 0 │ 0 │ 0 │ 0 │ 0 │
   └───┴───┴───┴───┴───┴───┴───┴───┴───┘
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import numpy as np
Z=np.zeros(9)
print(Z)

Create an Array of Ones

To create a numpy array containing ones, write: np.ones(size).

To create an array of size 9 write: np.ones(9)

Here is how this array is stored in memory:

    ┌───┬───┬───┬───┬───┬───┬───┬───┬───┐
  Z │ 1 │ 1 │ 1 │ 1 │ 1 │ 1 │ 1 │
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