How To Print Columns Of The Matrix In Python? In this article, we will discuss how to print columns of the matrix in Python programming language. A matrix object is similar to nested lists as they are multi-dimensional. In Python, a matrix is a rectangular Numpy array. The array has to be two-dimensional. It holds data held in the array’s rows and columns.
Get A Column of the 2D Array in Python:
The 2D array mainly represents data in a tabular or two-dimensional format. Here we are going to discuss how to access a column of a 2D array, for this firstly we must create a 2D array with rows and columns. Then we can access the values of rows and columns using the index position. We can get the row value using the [ ] operator. We can get column value using [ ][ ].
# Creating a 2D array
array = [[23, 45, 43, 23, 45], [45, 67, 54, 32, 45],
[89, 90, 87, 65, 44], [23, 45, 67, 32, 10]]
# display
print(array)
# get the first-row third element
print(array[0][2])
# get the third-row fourth element
print(array[2][3])Output:-
[ [23, 45, 43, 23, 45], [45, 67, 54, 32, 45], [89, 90, 87, 65, 44], [23, 45, 67, 32, 10] ]
43
65
Extract Column in Array in Python
Here we are going to discuss how to extract a column in an array, for this firstly we must create an array with rows and columns. Then use the syntax [row[i] for row in array] to extract the i – indexed column from the array.
# Creating a 2D array
an_array = [[11, 12, 13], [14, 15, 16], [17, 18, 19]]
column_one = [row[1] for row in an_array]
print(column_one)Output:-
[12, 15, 18]
So, here we have learned how to access the columns in the matrix in Python programming language. Hope you all find it useful.
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