What is wrong in my code of these addition of two numbers (Python 3)

1

While I was trying this addition problem (first practice problem that comes up on this site), I faced a problem.

The problem was to add two numbers.

So I typed:

A = input(“enter number A”)
B = input(“enter number B”)
print(int(str(A)) + int(str(B)))

It said that this method was wrong.

The answer, however, was this:
#Read the number of test cases.
T = int(input())
for tc in range(T):
# Read integers a and b.
(a, b) = map(int, input().split(’ '))

ans = a + b
print(ans)

I didn’t quite understand this code. Could some explain this to me?

2

Didn’t understand the map part

3

There must have been mentioned in the question that there has to be taken the number of test cases, which is T in this case. And for loop is used to repeat the program for T times.

‘map’ is a keyword used for mapping. Here it is used so that multiple values can be allotted to multiple variables in a single line.

Now, a and b will get inputs in a single line like we can enter:
1 2
instead of
1
2
in your previous case.

Hope you understand. If not just tell me and I will try telling you more. :blush: