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python-3.xmatrixintegersummary

Find summary of values contained in a matrix in python3

I would like to know how to do the summary of value contained in a matrix?I currently have this code for input of my matrix:

matrix = []
    loop = True
    while loop:
        line = input()
        if not line: 
            loop = False
        values = line.split()
        row = [int(value) for value in values]
        matrix.append(row)

For example,the matrix [[1,2,3],[4,5,6]] would result 21,the summary of all the values.And im not quite sure on how to do that.

Thank you!

Solution

  • You can use the built-in sum() function. As your matrix isn't flat, but a list of lists, you need to flatten it for sum():

    sum(val for row in matrix for val in row)