1、python--第一天练习题

#1、使用while循环输入 1 2 3 4 5 6 8 9 10

k = 0

while k < 10:

    k += 1

    if k == 7:

        continue

    print(k)

#2.求1-100内所有数的和

k = 0

z = k

while k < 100:

    k += 1

    z += k

print(z)

sum = 0

for count in range(1,101):

    sum += count

print(sum)

#3、输出1-100内的所有奇数或偶数

for i in range(1,101):		#奇数

    if i % 2 == 1:

        print(i)

for i in range(1,101):		#偶数

    if i % 2 == 0:

        print(i)

#4、输出1-100内所有的偶数之和

sum = 0

for i in range(1,101):

    if i % 2 == 0:

        sum += i

print(sum)

#5.1-2+3-4+5...99的所有数的和

a = 0

b = 0

for i in range(1,101):

    if i % 2 == 0:

        a += i

    else:

        b += i

print(b-a)

#6.用户登录(三次机会)

user = 'fan'

paaswd = 'fan'

con = 0

while con < 3:

    user1 = input("请输入账号：")

    paaswd1 = input("请输入密码：")

    if user1 == user and paaswd == paaswd1:

        print("登陆成功")

        break

    else:

        print("密码错误")

    con += 1
巴特西

1、python--第一天练习题

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