Python: Read a matrix from console and print the sum for each column
Python List: Exercise - 87 with Solution
Write a Python program to read a matrix from the console and print the sum for each column. As input from the user, accept matrix rows, columns, and elements separated by a space (each row).
Sample Solution:
Python Code:
rows = int(input("Input rows: "))
columns = int(input("Input columns: "))
matrix = [[0]*columns for row in range(rows)]
print('Input number of elements in a row (1, 2, 3): ')
for row in range(rows):
lines = list(map(int, input().split()))
for column in range(columns):
matrix[row][column] = lines[column]
sum = [0]*columns
print("sum for each column:")
for column in range(columns):
for row in range(rows):
sum[column] += matrix[row][column]
print((sum[column]), ' ', end = '')
Sample Output:
Input rows: 2 Input columns: 2 Input number of elements in a row (1, 2, 3): 1 2 3 4 sum for each column: 4 6
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Previous: Write a Python program to create a 3X3 grid with numbers.
Next: Write a Python program to read a square matrix from console and print the sum of matrix primary diagonal. Accept the size of the square matrix and elements for each column separated with a space (for every row) as input from the user.
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Python: Tips of the Day
Given a predicate function, fn, and a prop string, this curried function will then take an object to inspect by calling the property and passing it to the predicate:
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Output:
True
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