# coding=utf-8 支持中文

"""
多行注释
声明鸟类
"""


class Bird(object):
    have_feather = True
    way_of_reproduction = 'egg'

    # 类内功能模块空一行
    @staticmethod
    def move(x, y):
        position = [0, 0]
        position[0] = position[0] + x
        position[1] = position[1] + y
        return position


# 类，功能块空两行
class Chicken(Bird):
    way_of_move = 'walk'


summer = Bird()
print summer.way_of_reproduction
print summer.move(10, 20)

chicken = Chicken()
print chicken.way_of_move
print chicken.way_of_reproduction

空行，规范很烦躁。