[Python知识库]记录一下Python学习的练习题

写在前面

曾经学过C，java，基本已经还给学校了。对爬虫与数据感兴趣，想把Python学学，当个记录与督促，emmmmm，如果大神看到就。。。。。轻喷，就是记录一下自己的思路，搞！

1、猜拳游戏

练习输入(input)与if...elif...else,要求输入自己的猜拳，电脑出拳，算胜负

解题想法：

穷举所有可能性，包括：所有赢的条件、平局条件与输掉的条件，

如石头=1，剪刀=2，布=3，人类出拳是youhand ，电脑出拳是Cophand

1）第一版想法，通过人类出拳头输入的情况，看电脑情况，分类判断，实现后过程太冗余

2）简化，对所有条件穷举，同时，对所有赢的与平局条件与超出边界情况处理后，其它输的条件用else处理

# -*- coding = utf-8 -*-
# @Time : 01/08/2021 08:55
# @Author : XSM
# @File : ceidingke.py
# @Software : PyCharm

import random

print("开始猜拳游戏\n1、石头\t2、剪刀\t3、布\n")
youhand = int(input("请输入您的拳法\n"))
Cophand = random.randint(1,3)
print("youhand",youhand,"Cophand",Cophand)
''' 第一种
if youhand == 1: 
????????if youhand - Cophand == 0: 
????????????????print("平局") 
????????elif youhand - Cophand == -1: 
????????????????print("赢了") 
????????else: 
????????????????print("输了") 
elif youhand == 2: 
????????if youhand - Cophand == 0: 
????????????????print("平局") 
????????elif youhand - Cophand == 1: 
????????????????print("输了") 
????????else: 
????????????????print("赢了") 
elif youhand == 3: 
????????if youhand - Cophand == 0: 
????????????????print("平局") 
????????elif youhand - Cophand == 2: 
????????????????print("赢了") 
????????else: 
????????????????print("输了") 
else: print("请输入正确值") 
'''
'''第二种'''
if (youhand <= 0 or youhand > 3):
    print("您输入的拳法不正确")
else:
    if youhand == Cophand:
        print("Draw Game!")
    elif (youhand == 1 and Cophand == 2) or (youhand == 2 and Cophand == 3) or (youhand == 3 and Cophand == 1):
        print("Win!")
    else:
        print("Lose!")

2、九九乘法表

基础嵌套循环了。用for...in...rage(x)比起C简洁多了

# -*- coding = utf-8 -*-
# @Time : 01/08/2021 23:08
# @Author : XSM
# @File : 9x9.py
# @Software : PyCharm

for i in range(1,10):
    for x in range(1,i+1):
        print(i,"*",x,"=",i*x,end="\t")
    print("\n")

'''while 实现方式'''
tempX = 1
while tempX <= 9:
    y = 1
    while tempX-y >= 0:
        print(tempX, "*", y, "=", tempX*y,end="\t")
        y += 1
    print("\n")
    tempX += 1