That's not a question, the function's name in Racket is literally palindrome?. That is a code block that should only be shown in Racket.

the function is called however you want

Good luck with passing the tests if you name the function however you want. Removed the code block and added a link to wikipedia about what a palindrome is, that should be enough.

I agree this needs a better description. Why not make a proper pseudo-code for 8 kyu bloody beginners?

is_palindrome("nope")    // should return False
is_palindrome("Yay")     // should return True

Also, I don't get the meaning of the question "In Racket, the function is called palindrome?". The answer is no, the function is called however you want and there are no pre-defined palindrome functions nor in Racket, Python or C++.

Thank you for advise.
Next time will do it like you said :)

To summarize:
[start:stop;step]
the default start value is the beginning, and the default stop value is the end.
default step = 1.
So, [::1] wouldn't do anything. But when you use -1, it gets reversed and counts down.

i cant resolve this problem, because i found solution.

then mark as question.

I post this ISSUE here not because i cant resolve this problem, because i found solution.

It is strange to talk about my problems when i trying to help others.

I m a beginner in python. So it is hard to understand for me that what is happening in string[::-1].

English is not native language for a huge amount of people on CW. If your vocabulary is lacking, that's your problem.

Maybe, but for not native language users(English), word palindrome, in that context look like just function name.
That confusing.

https://docs.python.org/3/library/stdtypes.html#sequence-types-list-tuple-range

(you too, you need to work out your google skills, apparently ;) )

keep in mind that language APIs are a mine of gold (when they are well written... Which is globaly the case for python), so use them. ;)

I tested it. But I have a doubt. string[ : : -1] in this indexing starts with 0 and ends with -n. It means first and last letter of a string should be same.

Nope, not an issue.

But maybe you need a better dictionnary? (or working out your google skills a bit more?) ;)

Cheers

This Task need a better explanation/description.