所有课程均提供 Python 复习部分.zip

# Functions vs. Methods A function that lives inside a class is called a method. So, methods are functions, but not all functions are methods. ## Function ```python def average(sequence): return sum(sequence) / len(sequence) ``` ## Method ```python class Student: def __init__(self): # method self.name = "Rolf" self.grades = (79, 90, 95, 99) def average(self): # method return sum(self.grades) / len(self.grades) ```