Blog

You are currently viewing how to create 2D array in python 3.8

how to create 2D array in python 3.8

Spread the love

how to create 2D array in python 3.8

Welcome everyone, Today we will learn how to create a two-dimensional array in python so let’s start:
How do you create a two-dimensional array in Python language?

how to create two dimensional array in python
how to create a two-dimensional array in python

There are different ways to create Numpy arrays in python:

  • Using special library functions
  • Using Numpy functions
  • Conversion from other Python structures like lists

we know that Python provides many ways to create 1-dimensional,2-dimensional lists/arrays.  so let’s start to create a 1D array of size N initialized with 1s.
learn Matplotlib for Data Visualization 

How do you declare a two-dimensional array in python language?

Method 1A)

# First method to create a 1 D array using python code
Nu = 5
arrays = [2]*Nu
print(arrays)

Output:

[2, 2, 2, 2, 2]

Method 1B)

# Second method to create a 1 D array in python
Nu = 5
arrays = [8 for i in range(Nu)]
print(arrays)

Output:

[8, 8, 8, 8, 8]

we can use the below code to define 2-dimensional arrays in the following ways.

Method 2A)

# 2D array using python code
rows, cols = (3, 3)
arrays = [[1]*cols]*rows
print(arrays)

Output:

[[1, 1, 1], [1, 1, 1], [1, 1, 1]]

Method 2B)

# second method to create 2D array in python
rows, cols = (3, 3)
arrays = [[1 for i in range(cols)] for j in range(rows)]
print(arrays)

Output:

[[1, 1, 1], [1, 1, 1], [1, 1, 1]]

Method 2C)

#Third method to create 2D array in python
rows, cols = (3, 3)
arrays=[]
for i in range(cols):
col = []
for j in range(rows):
col.append(1)
arr.append(col)
print(arrays)

Output:

[[1, 1, 1], [1, 1, 1], [1, 1, 1]]

Summary: 
In this article, we saw the how-to create a two-dimensional array in python, if about this section you have any query then please comment me

Also see : python automatic Facebook post
Tags:
how to create a two-dimensional array in python, How do you declare a two-dimensional array in python language?
If you want to learn Numpy operation in python then click on it.
Best of luck!!!

Tags: , ,

sachin Pagar

I am Mr. Sachin pagar Embedded software engineer, the founder of Sach Educational Support(Pythonslearning), a Passionate Educational Blogger and Author, who love to share the informative content on educational resources.

Leave a Reply