 # Input numbers in nested list and check sum of each row is same or not in Python

###### Lists - Question 13

In this question, we will see how to input numbers in a 3X3 integer matrix (nested list) and check whether the sum of each row is same or not in Python programming. To know more about lists click on the lists lesson.

Q13) Write a program in Python to input numbers in a 3X3 integer matrix (nested list) and check whether the sum of each row is same or not.

#### Program

``````a=[[],[],[]]
r=0;c=0;rs=0;frs=0;x=0

print('Enter 9 numbers')
for r in range(3):
for c in range(3):
a[r].append(int(input()))

for r in range(3):
rs=0
for c in range(3):
print(a[r][c],end=' ')
rs=rs+a[r][c]
print('  Row Sum =',rs)

if r==0:
frs=rs      # store the first row sum in frs variable
elif frs!=rs:
x=1

if x==0:
print('Sum of each row is same')
else:
print('Sum of each row is not same')``````

#### Output

```Enter 9 numbers
5
5
5
5
5
5
5
5
5
5 5 5   Row sum = 15
5 5 5   Row sum = 15
5 5 5   Row sum = 15
Sum of each row is same``` 