How to Create Array of zeros using Numpy in Python

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In this article, we will cover how to create a Numpy array with zeros using Python.

Python Numpy Zeros Array

In Numpy, an array is a collection of elements of the same data type and is indexed by a tuple of positive integers. The number of dimensions in an array is referred to as the array’s rank in Numpy. Arrays in Numpy can be formed in a variety of ways, with different numbers of Ranks dictating the array’s size. It can also be produced from a variety of data types, such as lists, tuples, etc. To create a NumPy array with zeros the numpy.zeros() function is used which returns a new array of given shape and type, with zeros. Below is the syntax of the following method.

Syntax: numpy.zeros(shape, dtype=float, order=’C’)

Parameter:

  • shape: integer or sequence of integers
  • order: {‘C’, ‘F’}, optional, default: ‘C’
  • dtype : [optional, float(byDeafult)].

Return: Array of zeros with the given shape, dtype, and order.

Example 1: Creating a one-dimensional array with zeros using numpy.zeros()

Python3

import numpy as np

  

arr = np.zeros(9)

print(arr)

Output:

[0. 0. 0. 0. 0. 0. 0. 0. 0.]

Example 2: Creating a 2-dimensional array with zeros using numpy.zeros()

Python3

import numpy as np

  

arr = np.zeros((2, 3))

print(arr)

Output:

[[0. 0. 0.] [0. 0. 0.]]

Example 3: Creating a Multi-dimensional array with zeros using numpy.zeros()

Python3

import numpy as np

  

arr = np.zeros((4, 2, 3))

  

print(arr)

Output:

[[[0. 0. 0.] [0. 0. 0.]] [[0. 0. 0.] [0. 0. 0.]] [[0. 0. 0.] [0. 0. 0.]] [[0. 0. 0.] [0. 0. 0.]]]

Example 4: NumPy zeros array with an integer data type

Python3

import numpy as np

  

arr = np.zeros((2, 3), dtype=int)

print(arr)

Output:

[[0 0 0] [0 0 0]]

Example 5: NumPy Array with Tuple Data Type and Zeroes

In the output, i4 specifies 4 bytes of integer data type, whereas f8 specifies 8 bytes of float data type.

Python3

import numpy as np

  

arr = np.zeros((2, 2), dtype=[('x', 'int'),

                              ('y', 'float')])

print(arr)

print(arr.dtype)

Output:

[[(0, 0.) (0, 0.)] [(0, 0.) (0, 0.)]]
[('x', '<i4'), ('y', '<f8')]

How to Create Array of zeros using Numpy in Python

By Julio MarchiPosted on