from Student import Student
s = Student("melwin", 123, 25)
s.display()
s.course = 'python' #instance variable
# Python's garbage collector runs during program execution
# and is triggered when an object's reference count reaches
# zero. An object's reference count changes as the number
# of aliases that point to it changes.
# An object's reference count increases when it is assigned
# a new name or placed in a container (list, tuple, or
# dictionary). The object's reference count decreases when
# it's deleted with del, its reference is reassigned, or its
# reference goes out of scope. When an object's reference
# count reaches zero, Python collects it automatically.
del s
