how to create two dimensional array in python language

How to create a two-dimensional array in python language:

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
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!!!
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