my solution to "That's odd" doesn't work

Question

n=int(input())

sum=0
for i in range(n):
num=int(input())
if (num%2)==0:
sum=sum+num
print(sum)

The error:

Traceback (most recent call last):
File "./Playground/file0.py", line 5, in <module>
num=int(input())
EOFError: EOF when reading a line

in my PC it works, but in Sololearn it doesn't. What is the problem?

Answer 1

okay. with that example the first number is 3 and this will be the input for the variable n
because n == 3 the range of your for loop will be 3
as long as the first number you input in your “list” of inputs is the same as the amount of numbers that follow after the programme should work.
so
5
2
1
0
shouldn’t work :)
5
4
3
2
1
0
should work.
this is because of how sololearn input works (it needs all the input before running the programme and can’t ask for new input whilst running the programme)

Answer 2

n=int(input())

sum=0
for i in range(n):
num=int(input())
if (num%2)==0:
sum=sum+num
print(sum)

Now it works. I dont understand why.

Answer 3

The reason why it fails in SL is the special input behavior of SL PlayGround. You have 2 input() functions in your code, but where you have to keep in mimd that the second one is running repeatedly in a loop. You can find here some more information to this issue:
https://code.sololearn.com/c8pQgA9MTOj5/?ref=app

Answer 4

You've rediscovered one if the oftentimes shared truths of programming:

You spend a lot of time not knowing why it either fails or succeeds. ;-)

Answer 5

n=int(input())
sum=0
for i in range(n):
num=int(input())
if (num%2)==0:
sum=sum+num
print(sum)

This code is working

Answer 6

Yes here it will not work because you are taking input one by one.

If you have multiple inputs then you can take like this:-

223
345
700

Answer 7

Where is your input which you are taking share here.

Answer 8

This looks like it has to do with Sololearn input modalities.

https://code.sololearn.com/WhiNb9BkJUVC/?ref=app

Answer 9

The input is
3
2
1
0
Por example

Answer 10

Try it for #Python

n=int(input())
sum=0
for i in range(n):
num=int(input())
if (num%2)==0:
sum=sum+num
print(sum)

Answer 11

So... what can i do?

the input is a list, but i cant use n[i] for iterate:

IndexError: list index out of range

Answer 12

David Martínez can you share your exact input?. so what do you actually type in the input?

Answer 13

Mine works in VS code with 'sum =+ elem' - BUT here, it only works with a 'sum = sum + elem'. Bear in mind Sololearn's playground works differently than IDLE.

I've just spent an hour trying to figure out the bug that wasn't there.

Answer 14

Try to use while instead of the for loop