####Accessing object attributes
##class Student(object):
##    pass
##
##s = Student()
##s.first_name = "bob"
##print("s.first_name =", s.first_name)
##print("s.__class__ =",s.__class__) #every object automatically has a class attribute
##
###also possible to add attribute to a class,
###since a class is also an object
##Student.min_hours = 6   #a class variable
##print("Student.min_hours =", Student.min_hours)
##print("s.min_hours =", s.min_hours) # every student instance can access min_hours


####More commonly, we define class attributes within a class
##class Student(object):
##
##    #A class variable
##    min_courses = 2  #min_courses is the same for all students
##
##    #A class method
##    def set_course_list(self, courses):
##        self.course_list = courses #changes the instance variable
##
##    #Another class method
##    def enrolled_in(self, course):
##        return course in self.course_list
##
##    #check if the student meets the minimum number of courses
##    def has_min_courses(self):
##        return len(self.course_list) >= self.min_courses
##
##s = Student()
##print("s.min_courses =", s.min_courses)
##s.set_course_list( ["i90", "i202", "i206" ] )
##print("checking if s is enrolled in i90:", s.enrolled_in("i90") )
##print("checking if s is enrolled in i205:", s.enrolled_in("i205") )
##print("checking if s has the minimum number of courses:", s.has_min_courses())


####Demonstrates Constructor and __str__ methods
##class Student(object):
##
##    #Constructor method
##    def __init__(self, first_name, last_name):
##        self.first_name = first_name
##        self.last_name = last_name
##
##    #Hidden method to control how object is printed
##    def __str__(self):
##        return "Student: " + self.last_name +", " + self.first_name
##        
##
##TA = Student("Zach", "Schneider")
##print(TA.first_name)
##print(TA)
###Refactor the constructor to have default parameters