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import random #引入random库

#在指定起始值范围内随机取值
point1 = random.randrange(1,7)
point2 = random.randrange(1,7)
point3 = random.randrange(1,7)

#
def points():
    return str(point1), str(point2), str(point3) #返回三个变量值

#累加计算三个随机数并判断大小
def calc():
    values = point1 + point2 + point3 #累加计算
    if 11 <= values <= 18:
        return 'Big'
    elif 3 <= values <= 10:
        return 'Small'

#执行
print('>>> START <<<')
choose = input('Input Big or Small: ') #用户输入大小赋值变量
abc = points() #调用函数返回三个随机数并赋值变量
print('The points are {}'.format(abc)) #使用格式化字符串打印变量值

#定义状态列表，并判断状态
status = ['You are win!', 'You are lose!']
if choose == calc(): #判断，用户输入与函数计算返回值比较运算，一致返回成功
    print(status[-2])
else: #反之，不一致返回失败
    print(status[-1])

PS D:\Python> & C:/Users/harveymei/AppData/Local/Programs/Python/Python39/python.exe d:/Python/hello.py
>>> START <<<
Input Big or Small: Big
The points are ('5', '6', '3')
You are win!
PS D:\Python>

#打印1-100范围内偶数

#判断是否偶数
number = range(1,101) #定义取值范围1-100赋值给变量

for i in number: #定义for循环，元素赋值变量
    if (i%2) == 0: #判断，比较运算，取模为0时为True
        print(i)

print(bool((3%2 == 0))) #False
print(bool((4%2 == 0))) #True

#改造，将偶数写入列表，并打印列表中的元素

#打印1-100范围内偶数

#判断是否偶数
number = range(1,101) #定义取值范围1-100赋值给变量
list = [] #空列表

for i in number: #定义for循环，元素赋值变量
    if (i%2) == 0: #判断，比较运算，取模为0时为True
        #print(i)
        list.append(i) #改造，将偶数写入列表，并打印列表中的元素

print(bool((3%2 == 0))) #False
print(bool((4%2 == 0))) #True
print(list) #打印列表

PS D:\Python> & C:/Users/harveymei/AppData/Local/Programs/Python/Python39/python.exe d:/Python/hello.py
False
True
[2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 
52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94, 96, 98, 100]
PS D:\Python>

password_list = ['*#*#', '12345']
def account_login():
    tries = 3 #赋值变量，初始密码重试次数为3
    while tries > 0: #while循环
        password = input('Password:') #用户输入赋值变量
        #密码为12345，则password_correct = True
        password_correct = password == password_list[-1] 
        #密码为*#*#，则password_reset = True
        password_reset = password == password_list[0]

        if password_correct: #密码正确，打印成功提示，继续while循环
            print('Login success!')
        elif password_reset: #重设密码正确，提示输入新密码
            new_password = input('Enter a new password:')
            password_list.append(new_password) #新密码写入列表
            print('Password has changed successfully!')
            account_login() #重新调用函数登录
        else: #反之，提示错误
            print('Wrong password or invalid input!')
            tries = tries - 1 #同时对重试次数减1，并重新赋值给tries变量
            print(tries, 'times left') #打印提示剩余可重试次数
    else: #当while循环为False时，即tries不大于0时，打印提示账户锁定
        print('Your account has been suspended')
        exit() #break只可以用在while和for循环中，在超过重试次数后退出

#调用函数
account_login()

PS C:\Users\harveymei> & C:/Users/harveymei/AppData/Local/Programs/Python/Python39/python.exe c:/Users/harveymei/hello.py
Password:12345
Login success!
Password:*#*#
Enter a new password:54321
Password has changed successfully!
Password:123
Wrong password or invalid input!
2 times left
Password:123
Wrong password or invalid input!
1 times left
Password:123
Wrong password or invalid input!
0 times left
Your account has been suspended
PS C:\Users\harveymei>

#嵌套循环
#依次将1-9赋值给变量i
for i in range(1,10):
    for j in range(1,10): #依次将1-9赋值给变量j
        #使用format()字符串格式化函数填充字符串
        print('{} X {} = {}'.format(i, j, i*j))

PS C:\Users\harveymei> & C:/Users/harveymei/AppData/Local/Programs/Python/Python39/python.exe c:/Users/harveymei/hello.py
1 X 1 = 1
1 X 2 = 2
1 X 3 = 3
1 X 4 = 4
1 X 5 = 5
1 X 6 = 6
1 X 7 = 7
1 X 8 = 8
1 X 9 = 9
2 X 1 = 2
2 X 2 = 4
2 X 3 = 6
2 X 4 = 8
2 X 5 = 10
2 X 6 = 12
2 X 7 = 14
2 X 8 = 16
2 X 9 = 18
3 X 1 = 3
3 X 2 = 6
3 X 3 = 9
3 X 4 = 12
3 X 5 = 15
3 X 6 = 18
3 X 7 = 21
3 X 8 = 24
3 X 9 = 27
4 X 1 = 4
4 X 2 = 8
4 X 3 = 12
4 X 4 = 16
4 X 5 = 20
4 X 6 = 24
4 X 7 = 28
4 X 8 = 32
4 X 9 = 36
5 X 1 = 5
5 X 2 = 10
5 X 3 = 15
5 X 4 = 20
5 X 5 = 25
5 X 6 = 30
5 X 7 = 35
5 X 8 = 40
5 X 9 = 45
6 X 1 = 6
6 X 2 = 12
6 X 3 = 18
6 X 4 = 24
6 X 5 = 30
6 X 6 = 36
6 X 7 = 42
6 X 8 = 48
6 X 9 = 54
7 X 1 = 7
7 X 2 = 14
7 X 3 = 21
7 X 4 = 28
7 X 5 = 35
7 X 6 = 42
7 X 7 = 49
7 X 8 = 56
7 X 9 = 63
8 X 1 = 8
8 X 2 = 16
8 X 3 = 24
8 X 4 = 32
8 X 5 = 40
8 X 6 = 48
8 X 7 = 56
8 X 8 = 64
8 X 9 = 72
9 X 1 = 9
9 X 2 = 18
9 X 3 = 27
9 X 4 = 36
9 X 5 = 45
9 X 6 = 54
9 X 7 = 63
9 X 8 = 72
9 X 9 = 81
PS C:\Users\harveymei>