Why the answer is 55?

Question

x=10
y="5"
for i in y: # i has only index 0, right?
x,y=y,x # totally new to this assignment form, what does this mean?
x*=y//5 # does this mean x=×*(y//5)?????
print(x)

Answer 1

x, y = y, x
Switches the values around so x is "5" and y is 10.
x *= y // 5 # x = x * (y // 5)
x is a string "5". y (10) // 5 is 2 when you times a string you repeat it nth times in this case twice ("5" * 2) so x becomes 55.

Answer 2

I wonder who comes up with codes like this one. I mean, they don't really teach anything, mostly they don't even make sense.

for i in '5' will iterate over the single characters of the string '5' and set i to each of the characters.

for i in 'hello':
print(i)

would print h, e, l, l, o (without commas, each letter in a new line).

There's only one character in '5', so the loop will only be executed once. The variable i isn't really needed.

x, y = y, x swaps the values of the variables x and y. Now x is the string '5' and y is the integer 10.

x*=y//5 => y is 10, // is integer division. 10//5 = 2. So it's the same as '5'*2. In python, print(n * 'string') leads to 'string' being printed n times. That's why the final result is '55' (as a string, not an integer).

Answer 3

Take a screen shot 👆

Answer 4

Anna this is a code brought to me by random challenge here in solo learn😆😆 yes I agree with you this is a weird code, however it triggers my brain to think😁

Answer 5

Roberto After match end (Both side finished not declined or expired), you can view the correct answer down and the entrance is below the table with tick and cross.

Answer 6

many thanks😄hope you'll have the same easiness and cleareness to explain and teach "apparently difficult" issues like these 👍

Answer 7

Does anybody like me, already disliked, hates or got mad about the fact that challenge countdown in sololearn are too short??? I mean, apart the fact someone lost the challenges is there a way to save the question or code for our own future study?

Answer 8

yes...I forgot to mention that I'm tired of taking screenshots🤣I was wondering if is there a database here of challenge questions or similar..