wrote in programs with multiple import statementsthis convention makes it easier to see where the different modules used in the program come from summary in this you learned how to write your own classes you learned how to store information in class using attributes and how to write methods that give your classes the behavior they need you learned to write __init__(methods that create instances from your classes with exactly the attributes you want you saw how to modify the attributes of an instance directly and through methods you learned that inheritance can simplify the creation of classes that are related to each otherand you learned to use instances of one class as attributes in another class to keep each class simple you saw how storing classes in modules and importing classes you need into the files where they'll be used can keep your projects organized you started learning about the python standard libraryand you saw an example based on the ordereddict class from the collections module finallyyou learned to style your classes using python conventions in you'll learn to work with files so you can save the work you've done in program and the work you've allowed users to do you'll also learn about exceptionsa special python class designed to help you respond to errors when they arise classes