第五、六周练习

1、水仙花数

n = int(input())
if n>=3 and n<6:
    for i in range(10**(n-1),10**n):
        sum=0
        for j in map(int,str(i)):
            sum=sum+j**n
        if sum==i:
            print(i)

2、数列求和

a = int(input())       #接收用户输入并转为整数
n = int(input())
if 9 >= a >= 0:        #当n在1-9间时计算
    tmp = a
    sum = 0            #赋初值0
    for i in range(n):
        sum = sum + tmp       #求和
        tmp = tmp * 10 + a    
    print(sum)
        

3、温度转换异常处理

try:
    TempStr = input()
    if TempStr[-1] in ['F', 'f']:
        C = (eval(TempStr[0:-1]) - 32) / 1.8
        print("{:.2f}C".format(C))
    elif TempStr[-1] in ['C', 'c']:
        F = 1.8 * eval(TempStr[0:-1]) + 32
        print("{:.2f}F".format(F))
    else:
        print("输入错误，末位只能是'C','c','F','f'")
except NameError:
    print('试图访问的变量名不存在')
except SyntaxError:
    print('存在语法错误')
except Exception as e:
    print(e)

4、判断是否直角三角形

a=eval(input())
b=eval(input())
c=eval(input())
if(a**2+b**2==c**2 or b**2+c**2==a**2 or a**2+c**2==b**2):
    print("YES")
else:
    print("NO")
    

5、求e的近似值

import math
n = eval(input())
e = 1
for i in range(1,n+1):
    e += 1 / (math.factorial(i))   
print('{:.8f}'.format(e))

6、计算圆周率

threshold = eval(input())
pi4 = k = 0
f = 1
while abs(1 / (2 * k + 1)) >= threshold:
    pi4 = pi4 + f * 1 / (2 * k + 1)
    k = k + 1
    f = -f
print("{:.6f}".format(pi4*4))

7、个税计算器

s = float(input())
if s <0:
    print("error")
else:
    salary = s - 5000
    if salary <=3000:
        fee, num = 3,0
    elif 3000 < salary <= 12000:
        fee, num = 10, 210
    elif 12000 < salary <= 25000:
        fee, num = 20, 1410
    elif 25000 < salary <= 35000:
        fee, num = 25, 2660
    elif 35000 < salary <= 55000:
        fee, num = 30, 4410
    elif 55000 < salary <= 80000:
        fee, num = 35, 7160
    elif 80000 < salary :
        fee, num = 45, 15160
    tax = salary * fee / 100 - num
    print("应缴税款{:.2f}元，实发工资{:.2f}元。".format(tax,salary + 5000 - tax))

8、身份证号校验

ls = ( 7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2, 1 )
id = input()
sum = 0
for i in range(17):
    sum = sum + ls[i] * int(id[i])
if str(id[17]) == 'X':
    if sum % 11 == 2:
        print('身份证号码校验为合法号码!')
    else:
        print('身份证校验位错误!')
elif (sum % 11 + int(id[17])) % 11 == 1:
    print('身份证号码校验为合法号码!')
else:
    print('身份证校验位错误!')

9、校验身份证号码并输出个人信息

mport datetime
ls = ( 7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2, 1 )
id = input()
def IDcheck(id):
    sum = 0
    for i in range(17):
        sum = sum + ls[i] * int(id[i])
    if id[17] == 'X':
        if sum % 11 == 2:
            return 1
        else:
            return 0
    elif (sum % 11 + int(id[17])) % 11 == 1:
        return 1
    else:
        return 0

if IDcheck(id) == 1:
    year = id[6:10]
    month = id[10:12]
    day = id[12:14]
    if int(id[16]) % 2 == 0:
        sex = '女'
    if int(id[16]) % 2 == 1:
        sex = '男'
    print('身份证号码校验为合法号码!')
    print('出生：{}年{}月{}日'.format(year, month, day))
    print('年龄：{}'.format(datetime.datetime.now().year - int(year)))
    print('性别：{}'.format(sex))
else:
    print('身份证校验位错误!')

10、模拟生成微软序列号

import random

def key(num):    
    for i in range(num):  
        keySn = []
        for j in range(5):   
            s = ''
            characters = 'BCEFGHJKMPQRTVWXY2346789'
            for j in range(5): 
                s = s + random.choice(characters)
            keySn.append(s)
        key = '-'.join(keySn)  
        print(key)

num = int(input())
n = input()
random.seed(n)
key(num)