Create a Program to Implement Container Objects in Python Assignment Solution

Instructions

Objective

Write a python assignment to implement container objects.

Requirements and Specifications

Source Code

class Container: def __init__(self): """ Create an empty container """ self.__items = list() def insert(self, item): """ Append an element at the end of the container """ self.__items.append(item) def erase_one(self, item): """ Delete the first occurrence of the item """ if item in self.__items: self.__items.remove(item) def erase_all(self, item): """ Delete all occurrence of the item in the list """ while item in self.__items: self.__items.remove(item) def count(self, item): """ Count the occurrence of item in the list """ occurrence = 0 for some_item in self.__items: if some_item == item: occurrence += 1 return occurrence def items(self): """ Return distinct items in the list """ distinct_items = list() for item in self.__items: if item not in distinct_items: distinct_items.append(item) return distinct_items def __str__(self): """ Return a string representation of the container """ return str(self.__items)[1:-1] def __repr__(self): """ Returns a printable representation of the container """ return str(self.__items)[1:-1] def __getitem__(self, idx): """ Access an item from the list given the index """ return self.__items[idx] def __add__(self, other_container): """ Return a new container that contains all the items that is here and the other container """ new_container = Container() new_container.__items = self.__items + other_container.__items return new_container def __sub__(self, other_container): """ Return a new container where items here does not exist on the other container """ paired_indices = list() for i in range(len(other_container.__items)): paired_indices.append(False) new_container = Container() for i in range(len(self.__items)): pair_found = False for j in range(len(other_container.__items)): if self.__items[i] == other_container.__items[j] and not paired_indices[j]: pair_found = True paired_indices[j] = True break if not pair_found: new_container.__items.append(self.__items[i]) return new_container def __mul__(self, other_container): """ Find the intersection of two containers """ paired_indices = list() for i in range(len(other_container.__items)): paired_indices.append(False) new_container = Container() for i in range(len(self.__items)): pair_found = False for j in range(len(other_container.__items)): if self.__items[i] == other_container[j] and not paired_indices[j]: pair_found = True paired_indices[j] = True break if pair_found: new_container.__items.append(self.__items[i]) return new_container