Question

How to get the rows and columns of a matrix (2D array) in Python

Answer 1

arr = [    
        [1, 2, 3, 0],  
        [4, 5, 6, 1],  
        [7, 8, 9, 5]  
    ];  
   
rows = len(arr);  
cols = len(arr[0]);  

print("rows: ", rows);  
print("cols: ", cols);  


    
'''
run:

rows:  3
cols:  4

'''

 

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