#1、使用while循环输入 1 2 3 4 5 6 8 9 10 ‘’’ count = 0 while count < 10: count += 1 # count = count + 1 if count == 7: print(’ ') else: print(count)

count = 0 while count < 10: count += 1 # count = count + 1 if count == 7: continue print(count) ‘’’ #3、输出 1-100 内的所有奇数 #方法一：

count = 1

while count < 101:

print(count)

count += 2

#方法二：

count = 1

while count < 101:

if count % 2 == 1:

print(count)

count += 1

#5、求1-2+3-4+5 … 99的所有数的和

sum = 0

count = 1

while count < 100:

if count % 2 == 0:

sum = sum - count

else:

sum = sum + count

count += 1

print(sum)

#6、用户登陆（三次机会重试） #input 心中有账号，密码 while

i = 0 while i < 3: username = input(‘请输入账号：’) password = int(input(‘请输入密码：’)) if username == ‘咸鱼哥’ and password == 123: print(‘登录成功’) else: print(‘登录失败请重新登录’) i += 1