In Python code: Using this website: https://en.wikipedia.org/wiki/Greenhouse_gas Create a named tuple to contain each Gas Concentration data for these columns: Gas,Pre-1750,Recent,Absolute increase since 1750,Percentage increase since 1750. Design a class to hold this named tuple and add necessary dunders to support initialization, string conversion, sorting by a specific column (like 'Recent' for example) and searching.

class implementation file -- Rectangle.cpp class Rectangle { #include #include "Rectangle.h" using namespace std; private: double width; double length; public: void setWidth (double); void setLength (double) ; double getWidth() const; double getLength() const; double getArea () const; } ; // set the width of the rectangle void Rectangle::setWidth (double w) { width = w; } // set the length of the rectangle void Rectangle::setLength (double l) { length l; //get the width of the rectangle double Rectangle::getWidth() const { return width; // more member functions here

please answer with proper explanation and step by step solution. Question: Program in python: Design a simple class called Dealership, that has two functions: buyCar(Car a) and sellCar(Car a). buyCar(Car a): Adds the car to the list of cars already in the dealership. sellCar(Car a): Removes the car from the list of cars already in the dealership. Note: Implementation of the Car class is not important for this question

The class definition for an Item is given in the image UML diagram below Note: getInfo() returns a string containing ALL of the state information neatly organized. Part 1: Create a class based on the specification above. Reminder: – means private and + means public. Part 2: a)Write a function/method called "addItem" that takes: An array of items The number of items in the array An integer representing a barcode A string representing the name of an item A string representing the description of an item A double value representing the price The function must create and add the item to the array if there is space. The function must return "true" if the addition was successful and "false" otherwise. b)Write a function/method called "listItems" that takes: An array of items The number of items in the array The function must return a string containing the information on each item in the array. c)Write a function called "pricelookup" that takes : An array of items The number of...