﻿ Python: Read a matrix from console and print the sum for each column - w3resource

# 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 = [*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 = *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
```

Pictorial Presentation: Flowchart: ## Visualize Python code execution:

The following tool visualize what the computer is doing step-by-step as it executes the said program:

Python Code Editor:

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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:

Example:

```def tips_check_prop(fn, prop):
return lambda obj: fn(obj[prop])
check_age = tips_check_prop(lambda x: x >= 25, 'age')
user = {'name': 'Owen', 'age': 25}

print(check_age(user))
```

Output:

```True
```

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