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student = {"name": "Rolf", "grades": (89, 90, 93, 78, 90)}

def average(sequence):

return sum(sequence) / len(sequence)

print(average(student["grades"]))

# But wouldn't it be nice if we could...

# print(student.average()) ?

class Student:

def __init__(self):

self.name = "Rolf"

self.grades = (89, 90, 93, 78, 90)

def average(self):

return sum(self.grades) / len(self.grades)

student = Student()

print(student.average())

# Identical to Student.average(student)

# -- Parameters in __init__ --

class Student:

def __init__(self, name, grades):

self.name = name

self.grades = grades

def average(self):

return sum(self.grades) / len(self.grades)

student = Student("Bob", (36, 67, 90, 100, 100))

print(student.average())

# -- Remember *args ? --

class Student:

def __init__(self, name, *grades):

self.name = name

self.grades = grades

def average(self):

return sum(self.grades) / len(self.grades)

student = Student("Bob", 36, 67, 90, 100, 100)

print(student.average())