Instructions

You will need to create two files:

• Animal.py- file containing a class definition for an Animal object.
• AnimalShelter.py- file containing a class definition for an AnimalShelter object.

There will be no starter code for this assignment, but rather the class descriptions and required methods are defined in the specification below.

It's recommended that you organize your lab work in its own directory. This way all files for a lab are located in a single folder. Also, this will be easy to import various files into your code using theimport / fromtechnique shown in lecture.

Animal.pyclass

TheAnimal.pyfile will contain the definition of what an Animal is.

We will define the Animal attributes as follows:

• species-strthat represents the species of the animal.Your program should ensure that this field will be stored in all upper-case characters.
• weight-floatthat represents the weight (in lbs) of an animal.
• age-intthat represents the age (in years) of an animal.
• name-strthat represents the name of the animal.Your program should ensure this field will be stored in all upper-case characters.

You should write a constructor that allows the user to construct an animal object by passing in values for all of the fields.Your constructor should set these attributes with the valueNoneby default.

• __init__(self, species, weight, age, name)

In addition to your constructor, your class definition should also support "setter" methods that can update the state of the Animal objects:

• setSpecies(self, species)
• setWeight(self, weight)
• setAge(self, age)
• setName(self, name)

Each Animal object should be able to call a methodtoStringthat you will implement, which returns astrwith all the animal attributes. The string should contain all attributes in the following EXACT format:

a = Animal("dog", 12.2, 2, "Ruffles") print(a.toString()) 

Output:

Species: DOG, Name: RUFFLES, Age: 2, Weight: 12.2

Note:Thea.toString()return value in the example above does not contain a newline character ( ) at the end.

AnimalShelter.py

TheAnimalShelter.pyfile will contain the definition of what a single AnimalShelter object is.

AnAnimalShelterobject will contain a dictionary structure where the keys of the dictionary will be astrtype representing an Animal's species (all upper-case characters).

The dictionary value will be a list of Animal objects that the AnimalShelter contains. Note that the order of the Animals in the list is based on when the Animal object was inserted into the dictionary structure (most recent Animal inserted will be at the end of the list).

Your code should support the following constructor / methods:

• __init__(self)- Constructor that initializes the dictionary structure of the AnimalShelter class. Initially, this dictionary should be empty.
• addAnimal(self, animal)- Adds an Animal object (animal) to the AnimalShelter. The inserted Animal object should be added to the end of the list of existing animals that are the same species. You may assume that an animal with the same attributes does not already exist in the AnimalShelter when this method is called.
• removeAnimal(self, animal)- Removes an Animal object (animal) from the AnimalShelter if it exists. Your code will need to check and see if the parameter animal object has the same species, name, age, and weight as an existing animal in the AnimalShelter if it is to be removed from the AnimalShelter.
• getAnimalsBySpecies(self, species)- Returns a string of all animals of a certain species. This string should consist of a collection of strings - one line for each animal.Since each animal will be in its own line within a single string, a newline character ( ) should be inserted between each line (if applicable) EXCEPT at the very last line where no newline character should exist). The order of the Animals in this string will be dictated by the order of the Animals in the AnimalShelter's list for the Animal's species. The AnimaltoString()method should be used when constructing this method's return string. If no Animals of the species exist in the AnimalShelter, then this method returns an empty string (""). Note: thespeciesparameter value may be in either lower / upper case.
• doesAnimalExist(self, animal)- Returns True if the parameteranimal(with matching species, name, age, and weight) exists in the AnimalShelter. Returns False otherwise.

I need help with creating this for python practice