Python 2d matrix declare

Create a 2d array in python

def build_matrix(rows, cols):
    matrix = []

    for r in range(0, rows):
        matrix.append([0 for c in range(0, cols)])

    return matrix

if __name__ == '__main__':
    build_matrix(6, 10)

2d array in python

from array import *

T = [[11, 12, 5, 2], [15, 6,10], [10, 8, 12, 5], [12,15,8,6]]
for r in T:
    for c in r:
        print(c,end = " ")
    print()

Source: tutorialspoint.com

2d array pytho

# 2D array that is 3x4 (3 columns, 4 rows)
# note that it is essentially an array of lists
arr = [
		[11, 12, 5],
        [15, 6, 10],
        [10, 8, 12],
        [12, 15, 8]
        ]

Python 2d matrix declare

length, breadth = x, y
matrix = [[-1 for j in range(breadth)] for i in range(length)]
# every element is -1

Similar codes

0 vote235 views1 answer
Randomly splits this DataFrame with the provided weights
Python
0 vote257 views1 answer
Python reference parent module
Python
1 vote241 views1 answer
Convert negative to zero in list in python
Python
1 vote267 views2 answers
What is a cube plus b cube
Python
1 vote243 views1 answer
Convert rgb to a single value
Python
12 votes264 views3 answers
Python efficiently find duplicates in list
Python
0 vote257 views1 answer
Open file in python network url
Python
0 vote255 views2 answers
What does manage.py do
Python
1 vote246 views1 answer
How to append data to csv file in python without replacing the already present text
Python
0 vote261 views1 answer
For loop with zip and enumerate
Python