Python programming allows function to take some parameters and compute them and return a value. This is very efficient method of programming when it clearly defined what inputs a function will take and what output it returns.

### Python Program That Compute Sum Of Two Matrix

In this example, we will create *two matrix using lists* and use python functions to pass the matrix and add them and return a `sum_matrix`

.

```
# Program to add two matrix and return the final matrix
# print the output
matrixOne = [[2,3],[1,1]]
matrixTwo = [[4,5],[7,2]]
sum_matrix = [[0,0],[0,0]]
def add_m():
m3 = [[0,0],[0,0]]
for i in range(2):
for j in range(2):
m3[i][j] = matrixOne[i][j] + matrixTwo[i][j]
return m3
sum_matrix = add_m()
for i in range(0,2):
for j in range(0,2):
print(sum_matrix[i][j], end=" ")
print()
```

In the program above, the function receives two matrix of size `2 x 2`

and adds them to `m3`

. The matrix `m3 `

is returned as the final matrix.

The function is called with matrices as arguments and the output is assigned to `sum_matrix`

. It means the function will return `m3`

matrix and assign it to `sum_matrix`

. Then we use a nested loop to display the content of `sum_matrix`

. Output of the above program is given below.

```
====== RESTART: C:\Python_projects\Functions\Add_Matices.py =========
6 8
8 3
>>>
```

In the next article, we will discuss a new topic.

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