1.使用while循环输出1 2 3 4 5 6     8 9 10

1 count = 12 while count < 11:3     if count == 7:4         count+=15         continue6     print(count)7     count+=1

2.求1-100的所有数的和

1 num = 12 summing = 03 while num < 101:4     summing+=num5     num+=16 print(summing)

3.输出 1-100 内的所有奇数

1 num = 12 while num < 101:3     if num%2 ==1:4         print(num)5     num+=1

4.输出 1-100 内的所有偶数

1 num = 12 while num < 101:3     if num%2 ==0:4         print(num)5     num+=1

 

5.求1-2+3-4+5 ... 99的所有数的和

1 num = 1 2 summing = 0 3 while num <100: 4     if num % 2 ==1: 5         summing+=num 6     else: 7         num = -num 8         summing+=num 9         num =-num10     num += 111 print(summing)

6. 用户登陆（三次机会重试）

1 count = 0 2 while count<3: 3     name = input('请输入你的用户名：') 4     pwd = input('请输入你的密码：') 5     if name == 'egon' and pwd == '123': 6         print('login successful') 7         break 8     else: 9         print('name or passward error')10         count+=111 else :12     print('尝试次数太多')

7：猜年龄游戏要求：    允许用户最多尝试3次，3次都没猜对的话，就直接退出，如果猜对了，打印恭喜信息并退出

1 count = 0 2 tag = True 3 while tag: 4     if count<3: 5         age = input('猜猜看我的年纪：') 6         age = int(age) 7         if age == 25: 8             print('猜对了，恭喜') 9             tag = False10         else:11             print('猜错了，请继续')12             count+=113             continue14     tag = False

 

8：猜年龄游戏升级版 要求：    允许用户最多尝试3次    每尝试3次后，如果还没猜对，就问用户是否还想继续玩，如果回答Y或y, 就继续让其猜3次，以此往复，如果回答N或n，就退出程序    如何猜对了，就直接退出 

count = 0tag = Truewhile tag:    if count<3:        age = input('猜猜看我的年纪：')        age = int(age)        if age == 25:            print('猜对了，恭喜')            tag = False        else:            print('猜错了，请继续')            count+=1    else:        while tag:            user_inp = input('是否继续猜？Y/N')            if user_inp == 'y'or user_inp =='Y':                count=0                break            elif user_inp=='n'or user_inp=='N':                print('谢谢，结束了')                tag = False            else:                print('请按要求输入')

 九九乘法表

for i in range(1,10):    for j in range(1,i+1):        print('%s * %s = %s'%(j,i,i*j),end='   ')    print()

结果：

1 * 1 = 1

1 * 2 = 2 2 * 2 = 4

1 * 3 = 3 2 * 3 = 6 3 * 3 = 9

1 * 4 = 4 2 * 4 = 8 3 * 4 = 12 4 * 4 = 16

1 * 5 = 5 2 * 5 = 10 3 * 5 = 15 4 * 5 = 20 5 * 5 = 25

1 * 6 = 6 2 * 6 = 12 3 * 6 = 18 4 * 6 = 24 5 * 6 = 30 6 * 6 = 36

1 * 7 = 7 2 * 7 = 14 3 * 7 = 21 4 * 7 = 28 5 * 7 = 35 6 * 7 = 42 7 * 7 = 49

1 * 8 = 8 2 * 8 = 16 3 * 8 = 24 4 * 8 = 32 5 * 8 = 40 6 * 8 = 48 7 * 8 = 56 8 * 8 = 64

1 * 9 = 9 2 * 9 = 18 3 * 9 = 27 4 * 9 = 36 5 * 9 = 45 6 * 9 = 54 7 * 9 = 63 8 * 9 = 72 9 * 9 = 81

#金字塔

1 max_level = 102 for i in range(1,max_level+1):3     print(' '*(max_level-i)+'*'*(2*i-1))