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 vote161 views1 answer
How to find the indexes of a substring in a string in python
Python
3 votes185 views1 answer
Import py to exe
Python
0 vote163 views1 answer
Check is symmetric python
Python
91 votes168 views2 answers
Python 3 download
Python
0 vote176 views1 answer
Yml anaconda
Python
0 vote173 views1 answer
Global /tmp/pip-req-build-civioau0/opencv/modules/videoio/src/cap_v4l.cpp (587) autosetup_capture_mode_v4l2 VIDEOIO(V4L2:/dev/video0): device is busy
Python
5 votes183 views3 answers
How to convert array value to integer in python
Python
0 vote165 views1 answer
Python - caéculate the average based on the level of a second column in a df
Python
1 vote198 views1 answer
How to use Qtimer in thread python
Python
0 vote138 views1 answer
Django rest framework multiple user registration
Python