Python diagonal sum

# A simple Python3 program to find
# sum of diagonals
MAX = 100
 
def printDiagonalSums(mat, n):
 
    principal = 0
    secondary = 0
    for i in range(0, n):
        principal += mat[i][i]
        secondary += mat[i][n - i - 1]
         
    print("Principal Diagonal:", principal)
    print("Secondary Diagonal:", secondary)
 
# Driver code
a = [[ 1, 2, 3, 4 ],
     [ 5, 6, 7, 8 ],
     [ 1, 2, 3, 4 ],
     [ 5, 6, 7, 8 ]]
printDiagonalSums(a, 4)
 
# This code is contributed
# by ihritik

Source: geeksforgeeks.org

Sum of diagonal numpy

arr= np.arange(16)
arr= np.reshape(arr,(4,4))

a=np.diagonal(arr, 0,0,1)

result=sum(a)
print(result)

-1

Source: numpy.org

Similar codes

0 vote255 views1 answer
For loop to convert a list to lowercase
Python
-1 vote203 views1 answer
How to create user input in python
Python
0 vote218 views1 answer
Python community
Python
1 vote252 views1 answer
Handle queries in ListView django
Python
1 vote234 views1 answer
Continue reading lines until there is no more input python
Python
3 votes238 views2 answers
Pygame change logo
Python
9 votes285 views2 answers
Django model form import
Python
1 vote243 views1 answer
Dictionary with double key python
Python
1 vote243 views1 answer
Mysql Unread result found
Python
0 vote234 views1 answer
Python call function in the same class
Python