定义一个门票系统
- 门票的原价是100元
- 当周末的时候门票涨价20%
- 小孩子半票
- 计算2个成人和1个小孩的平日票价
class Ticket():
def __init__(self, weekend = False, child = False):
self.exp = 100
if weekend:
self.inc = 1.2
else:
self.inc = 1
if child:
self.discount = 0.5
else:
self.discount = 1
def cal_price(self, num):
return self.exp * self.inc * self.discount * num
adult = Ticket()
child = Ticket(child = True)
print("两个成年人和一个小孩子平日的价格是{}".format(adult.cal_price(2) + child.cal_price(1)))
adult = Ticket(weekend = True)
child = Ticket(weekend = True, child = True)
print("两个成年人和一个小孩子周末的价格是{}".format(adult.cal_price(2) + child.cal_price(1)))
两个成年人和一个小孩子平日的价格是250.0
两个成年人和一个小孩子周末的价格是300.0
游戏编程:按以下要求定义一个乌龟类和鱼类并尝试编程
- 假设游戏场景为范围(x,y)为 0<=x<=10, 0<=y<=10
- 游戏生成1只乌龟和10条鱼
- 他们的移动方向均随机
- 乌龟的最大移动能力是2(乌龟可以随机选择移动是1还是2),鱼的最大移动能力是1
- 当移动到场景边缘,自动反方向移动
- 乌龟初始化体力为100(上限)
- 乌龟每移动一次,体力消耗1
- 当乌龟和鱼重叠,乌龟吃掉鱼,乌龟体力增加20
- 鱼不计算体力
- 当乌龟体力值为0或者鱼的数量为0时,游戏结束
import random as r
class Turtle(object):
def __init__(self):
self.power = 100
self.x = r.randint(0,10)
self.y = r.randint(0,10)
def move(self):
new_x = r.choice([1,2,-1,-2]) + self.x
new_y = r.choice([1,2,-1,-2]) + self.y
if new_x < 0:
self.x = 0 - (new_x - 0)
elif new_x > 10:
self.x = 10 - (new_x - 10)
else:
self.x = new_x
if new_y < 0:
self.y = 0 - (new_y - 0)
elif new_y > 10:
self.y = 10 - (new_y - 10)
else:
self.y = new_y
self.power -= 1
return (self.x, self.y)
def eat(self):
self.power += 20
if self.power >= 100:
self.power = 100
class Fish(object):
def __init__(self):
self.x = r.randint(0,10)
self.y = r.randint(0,10)
def move(self):
new_x = self.x + r.choice([1,-1])
new_y = self.y + r.choice([1,-1])
if new_x < 0:
self.x = 0 - (new_x - 0)
elif new_x > 10:
self.x = 10 - (new_x - 10)
else:
self.x = new_x
if new_y < 0:
self.y = 0 - (new_y - 0)
elif new_y > 10:
self.y = 10 - (new_y - 10)
else:
self.y = new_y
return (self.x, self.y)
turtle = Turtle()
fish = []
for i in range(10):
new_fish = Fish()
fish.append(new_fish)
while True:
if not len(fish):
print("鱼被吃完了,游戏结束")
break
if not turtle.power:
print("乌龟体力被耗尽了,游戏结束")
break
pos = turtle.move()
for each_fish in fish[:]:
if each_fish.move() == pos:
turtle.eat()
fish.remove(each_fish)
print("有一条鱼被吃掉了")
有一条鱼被吃掉了
有一条鱼被吃掉了
有一条鱼被吃掉了
有一条鱼被吃掉了
有一条鱼被吃掉了
有一条鱼被吃掉了
有一条鱼被吃掉了
有一条鱼被吃掉了
有一条鱼被吃掉了
有一条鱼被吃掉了
鱼被吃完了,游戏结束
定义一个点(point)和直线(Line)类,使用getLine方法获取两点构成直线的长度
import math
class Point(object):
def __init__(self, x = 0, y = 0):
self.x = x
self.y = y
def get_x(self):
return self.x
def get_y(self):
return self.y
class Line(object):
def __init__(self, p1, p2):
self.x = p1.get_x() - p2.get_x()
self.y = p1.get_y() - p2.get_y()
self.len = math.sqrt(self.x*self.x + self.y*self.y)
def get_len(self):
return self.len
p1 = Point(2,3)
p2 = Point(5,7)
line = Line(p1, p2)
line.get_len()
5.0
(完)