Update search_first_key.py

[ksidiqi]

cleaner way

[tsunghsienlee]

Hi @ksidiqi ,

This looks crisp, and I am still debating about using this solution or not as personally I don't like the if statement check in return. However, the original solution will suffer the the problem of repeating statement but cleaner logic in my opinion.

We authors will think about and come back about this.

[metopa]

@ksidiqi Hi there, sorry for the long wait. I'll check this out right after I do my state exams at the end of June. I'll keep you updated :)