看代码写结果【如果有错误，则标注错误即可，并且假设程序报错可以继续执行】
class Foo(object):
a1 = 1
def __init__(self,num):
self.num = num
def show_data(self):
print(self.num+self.a1)
obj1 = Foo(666)
obj2 = Foo(999)
print(obj1.num)
print(obj1.a1)
obj1.num = 18
obj1.a1 = 99
print(obj1.num)
print(obj1.a1)
print(obj2.a1)
print(obj2.num)
print(obj2.num)
print(Foo.a1)
print(obj1.a1)
结果:
666
1
18
99
1
999
999
1
99看代码写结果，注意返回值。
class Foo(object):
def f1(self):
return 999
def f2(self):
v = self.f1()
print('f2')
return v
def f3(self):
print('f3')
return self.f2()
def run(self):
result = self.f3()
print(result)
obj = Foo()
v1 = obj.run()
print(v1)
结果
f3
f2
999
None
看代码写结果
class Foo(object):
def __init__(self, num):
self.num = num
v1 = [Foo for i in range(10)]
v2 = [Foo(5) for i in range(10)]
v3 = [Foo(i) for i in range(10)]
print(v1)
print(v2)
print(v3)
结果
[<class '__main__.Foo'>, <class '__main__.Foo'>, <class '__main__.Foo'>, <class '__main__.Foo'>, <class '__main__.Foo'>, <class '__main__.Foo'>, <class '__main__.Foo'>, <class '__main__.Foo'>, <class '__main__.Foo'>, <class '__main__.Foo'>]
[<__main__.Foo object at 0x000002A1D906D908>, <__main__.Foo object at 0x000002A1D906D898>, <__main__.Foo object at 0x000002A1D906D860>, <__main__.Foo object at 0x000002A1D906D828>, <__main__.Foo object at 0x000002A1D906D7B8>, <__main__.Foo object at 0x000002A1D906DDD8>, <__main__.Foo object at 0x000002A1D906DE10>, <__main__.Foo object at 0x000002A1D906DE48>, <__main__.Foo object at 0x000002A1D906DE80>, <__main__.Foo object at 0x000002A1D906DEB8>]
[<__main__.Foo object at 0x000002A1D906DEF0>, <__main__.Foo object at 0x000002A1D906DF28>, <__main__.Foo object at 0x000002A1D906DF60>, <__main__.Foo object at 0x000002A1D906DF98>, <__main__.Foo object at 0x000002A1D906DFD0>, <__main__.Foo object at 0x000002A1D9073048>, <__main__.Foo object at 0x000002A1D9073080>, <__main__.Foo object at 0x000002A1D90730B8>, <__main__.Foo object at 0x000002A1D90730F0>, <__main__.Foo object at 0x000002A1D9073128>]
看代码写结果
class StarkConfig(object):
def __init__(self, num):
self.num = num
def changelist(self, request):
print(self.num, request)
config_obj_list = [StarkConfig(1), StarkConfig(2), StarkConfig(3)]
for item in config_obj_list:
print(item.num)
结果
1
2
3
看代码写结果：
class StarkConfig(object):
def __init__(self, num):
self.num = num
def changelist(self, request):
print(self.num, request)
config_obj_list = [StarkConfig(1), StarkConfig(2), StarkConfig(3)]
for item in config_obj_list:
item.changelist(666)
1 666
2 666
3 666看代码写结果：
class Department(object):
def __init__(self,title):
self.title = title
class Person(object):
def __init__(self,name,age,depart):
self.name = name
self.age = age
self.depart = depart
d1 = Department('人事部')
d2 = Department('销售部')
p1 = Person('武沛齐',18,d1)
p2 = Person('alex',18,d1)
p3 = Person('安安',19,d2)
print(p1.name)
print(p2.age)
print(p3.depart)
print(p3.depart.title)
结果:
武沛齐
18
<__main__.Department object at 0x000001EA92C7DD68>
销售部看代码写结果：
class Department(object):
def __init__(self,title):
self.title = title
class Person(object):
def __init__(self,name,age,depart):
self.name = name
self.age = age
self.depart = depart
def message(self):
msg = "我是%s,年龄%s,属于%s" %(self.name,self.age,self.depart.title)
print(msg)
d1 = Department('人事部')
d2 = Department('销售部')
p1 = Person('武沛齐',18,d1)
p2 = Person('alex',18,d1)
p1.message()
p2.message()
结果:
我是武沛齐,年龄18,属于人事部
我是alex,年龄18,属于人事部看代码写结果：
class A:
def f1(self):
print('in A f1')
class B(A):
def f1(self):
print('in B f1')
class C(A):
def f1(self):
print('in C f1')
class D(B, C):
def f1(self):
super(B, self).f1()
print('in D f1')
obj = D()
obj.f1()
结果:
in C f1
in D f1看代码写结果：
class A:
def f1(self):
print('in A f1')
class B(A):
def f1(self):
super().f1()
print('in B f1')
class C(A):
def f1(self):
print('in C f1')
class D(B, C):
def f1(self):
super().f1()
print('in D f1')
obj = D()
obj.f1()
结果:
in C f1
in B f1
in D f1程序设计题：
运用类完成一个扑克牌类(无大小王)的小游戏：
用户需要输入用户名，以下为用户可选选项:
1. 洗牌
2. 随机抽取一张
3. 指定抽取一张
4. 从小到大排序
5. 退出
1. 洗牌：每次执行的结果顺序随机。
2. 随机抽取一张：显示结果为：太白金星您随机抽取的牌为：黑桃K
3. 指定抽取一张：
用户输入序号（1~52）
比如输入5，显示结果为：太白金星您抽取的第5张牌为：黑桃A
4. 将此牌从小到大显示出来。A -> 2 -> 3 .......-> K
提供思路：
52张牌可以放置一个容器中。
用户名，以及盛放牌的容器可以封装到对象属性中。
import random
class Poker:
lst = ["A"]+[str(i) for i in range(2,11)]+["J","Q","K"]
def __init__(self,name,poker_list):
self.name = name
self.poker_list = poker_list
self.scrap_card = []
def shuffle_cards(self):
"""
洗牌
:return:
"""
self.poker_list += self.scrap_card
random.shuffle(self.poker_list)
print(self.poker_list)
def random_extraction(self):
"""
随机抽取一张牌
:return:
"""
x = random.choice(self.poker_list)
print(f"{self.name}您随机抽取的牌为:{x}")
self.scrap_card.append(x)
self.poker_list.remove(x)
def appoint(self,num):
"""
指定一张牌
:param num:第几张牌
:return:
"""
x = self.poker_list[num - 1]
print(f"{self.name}您抽取的第{num}张牌为:{x}")
self.scrap_card.append(x)
self.poker_list.remove(x)
def Sort(self):
self.poker_list.sort(key=lambda x:self.lst.index(x[2:]))
print(self.poker_list)
lst1 = ["黑桃","红桃","方片","梅花"]
lst2 = [ str(i) for i in range(2,11)]+["A","J","Q","K"]
poker_list = [ i +j for i in lst1 for j in lst2]
name = input("请输入姓名")
masge = """
1. 洗牌
2. 随机抽取一张
3. 指定抽取一张
4. 从小到大排序
5. 退出
"""
poker = Poker(name,poker_list)
dic = {"1":poker.shuffle_cards,"2" :poker.random_extraction,"3":poker.appoint,"4":poker.Sort,"5":exit}
while True:
ch = input(masge + "\n>>>")
if ch in dic and ch !="3":
dic[ch]()
elif ch == "3":
num = input(f"请输入一序号1~{len(poker.poker_list)}")
if num.isdecimal() and 0 < int(num) < len(poker.poker_list):
dic[ch](int(num))
else:
print("输入的序号有误!")
else:
print("请输入正确的选项!")原文：https://www.cnblogs.com/ciquankun/p/11317215.html