[::-1]
and that is it

splitting a string turns it into list that is why he/she used k.reverse to reverse the string

Updated the description to be hopefully clearer:

You can try to get a response once a day, thus you have n * 7 tries in total to find...

Yeah, seriously, this problem's instructions do not make sense, and seem to be leaving out some information. Skip....

"find the main love language of your partner!"

You can call response for n weeks. Then you have to return what you think is your partner's main love language.

_ is often used as a variable that's unused (Other than in Lodash), it's just a variable name that doesn't really have a name.

see above.

see upper.

@Ashish8796

• Of course , My Pleasure
• Just Post your Code under Spoluier Flag not to reveal any Pieces of Solutions and label it as a question
• Hope you've enjoyed Maximum Triplet Sum , Maximum Gap , Row Weights , Tuned to hear from you .. Regards .. Zizou

this is a somewhat trick. Don't bother with that, you'll never need it.

note: spoiler flag, when you post info giving up the solution.