📝 Class Materials:
Sample code
# Created the Dog class
class Dog:
pass
# Instatiation
jess_dog = Dog()
# TODO: Create an instance of Dog and assign it to a variable
# Create attributes for jess_dog object, using dot notation.
# Like variables, if attribute did not exist, it is created when you first assign it a value.
jess_dog.name = "Tara"
jess_dog.age = 1
jess_dog.color = "brown"
jess_dog.cuteness_level = 10
# TODO: Add four attrbutes to your dog instance. Give each a value that describes your dog.
# Update attributes similar to how you would update a variable.
jess_dog.age += 1
print(f"My age is {jess_dog.age}")
# TODO: Update the some of the attributes of your dog instance. Assign a new value
# to one of the existing attributes of your dog.
# The name attribute
print(f"My name is {jess_dog.name}")
# TODO: Print one or more of your dog's attributes:
# Delete a property from an object with del
del jess_dog.name
print(f"My name is {jess_dog.age}")
# TODO: Delete one of the attributes of your dog.
# Rather than having to print all of the attributes one by one, we can use __dict__
print(jess_dog.__dict__)
# TODO: Check the attrbutes of your dog by printing yourdog.__dict__. This should
# show you all of the attribues that exist on your dog. # TODO: We need to define a Dog class. All dogs will have the following
# attributes. Define these on the class Dog below.
# name
# breed
# fave_snack
# By defining these attributes on the class all dog instances will have them.
# Remember! attributes are initialized in the __init__ method!
# Dog class
class Dog:
pass
# TODO: Instantiate 3 objects of type Dog
dog_1 = Dog()
dog_2 = Dog()
dog_3 = Dog()
# TODO: Using the instance variable names, create a list of Dog objects called dogs.
# TODO: Using the loop print the name of each dog
# TODO: Using a loop, delete breed attribute for all the dogs in the list dogs
# TODO: Using a loop, add an attribute 'species' and assign it the value 'canine'
# TODO: Use the __dict__ attribute to print each dog and check it's attributes and values
# use a loop to print __dict__ for each dog in your list.
# TODO: Each object should have the following attributes:
# name - name of the city you picked
# country - the country the city is located in
# temperature - the city's temperature in F.
# latitude - city's latitude coordinate
# longitude - city's longitude coordinate
# Location class
class Location:
pass
# TODO: Instantiate three locations. Instaniate each location with the correct values for
# name, country, temperature, latitude, longitude. For the last three look up the correct
# values! Use the current teperature and the actual latitude and longitude.
# TODO: Using the object variable names, create a list of Location objects called bucketlist.
# TODO: Using the loop print the name of the city of each location in bucketlist.
# TODO: Loop over your locations and print only locations above the equator.
# Latitude represents how far above or below the equator a location is. Positive numbers
# are above the equator negative numbers are below.
# TODO: Using the loop, loop through the objects to find which location has the warmest weather
# Students Class
class Student:
# class attributes are shared by all instances
school = "Make School"
location = "San Francisco"
major = "Computer Science"
# TODO: Instantiate 2 object of type Student
jhene = Student()
kehlani = Student()
# TODO: Access class attributes using dot notation. Run this code and check the output
print(f"Jhene studies {jhene.major} at {jhene.school} in {jhene.location}.")
print(f"Kehlani studies {kehlani.major} at {kehlani.school} in {kehlani.location}.")
# TODO: Print the __dict__ attribute to for each object to see a dictionary of all the attributes defined for the object itself.
print(jhene.__dict__)
print(kehlani.__dict__)
# TODO: Answer the question: Why is it blank?
# TODO: Remove the comment on the line below:
# print(Student.__dict__)
# TODO: Answer the questions:
# What attributes do I see in the Student class object?
# Is Student an instance of Student or is it something else?
# Imagine that Make School moves to San Rafael!
# We can update the class variable for all instances by:
# TODO: Uncomment the line below
# Student.location = "San Rafael"
# TODO: Uncomment the lines below and run your code.
# Here you are printing the location for each student again.
# print(f"Jhene studies in {jhene.location}.")
# print(f"Kehlani studies in {kehlani.location}.")
# TODO: Kehlani transfered , update her school to UCLA.
# Uncomment these lines:
# kehlani.school = "UCLA"
# print(kehlani.school)
# Do you think that the name of the school will change for Jhene too? Test it.
# TODO: Predict what you think will happen. Is jhene going to UCLA or are they
# still in San Rafael?
# print(jhene.school)
# What happened?
# Print the __dict__ for kehlani# Let's add instance attributes to the Students class:
class Student:
# Class attributes
school = 'Make School'
location = 'San Francisco'
major = 'Computer Science'
def __init__(self, name, year, coach):
# instance attributes
self.name = name
self.year = year
self.coach = coach
# TODO: Add three instances with attributes:
student_1 = Student("Jeffrey", 2021, "Lui")
student_2 = Student("Hector", 2022, "Amanda")
student_3 = Student("Consuela", 2023, "Paul")
student_4 = Student("Consuela", 2023, "Paul")
# Using __dict__, print the name space of each Student object
print(student_1.__dict__)
print(student_2.__dict__)
print(student_3.__dict__)
# TODO: Add a class attribute called num_students, which will keep count
# of the number of students created. Initialize it to 0
# TODO: In your __init__ method, increment the num_students class attribute by 1.
# TODO: Print the value of the Student.num_students below:
# TODO: Add an instance method called say_hello. It should print
# the student's name and a greeting
# TODO: Create a new class named Course. This should have a name and
# list of students as attributes.
# TODO: Give the new Course class two instance methods: add_student
# and drop_student. These methods should take a student as an argument
# and add or remove that student from the student list.
# TODO: Create a new course.
# TODO: Add the four students above to your new course.
# TODO: Add a new method to Course called introduction. It should
# loop through all students and call the say_hello method on each.