Two Sum - LeetCode 1 | Coding | Python | DSA Sheet

I have started a series to solve DSA sheet by @Fraz to conquer problem solving skills using Python. If you are an engineering student, and want improve DS and problem solving skills, let us do it together. Link to the sheet :- https://docs.google.com/spreadsheets/d/1-wKcV99KtO91dXdPkwmXGTdtyxAfk1mbPXQg81R9sFE/edit#gid=0