I need python data structures expert who can implement functions and methods in the given code and not changing the code that is given

Note: You don't have to change the code just you have to implement the functions and methods that are described in the file given below and you have to work according to the requirements only

I need Some one to help me in my project of python data structures in which the code is given and you have to just add the functions and logic that is described in the requirements file