day05

输入姑娘的年龄后，进行以下判断：

如果姑娘小于18岁，打印“不接受未成年”
如果姑娘大于18岁小于25岁，打印“心动表白”
如果姑娘大于25岁小于45岁，打印“阿姨好”

如果姑娘大于45岁，打印“奶奶好”

girl_gender = input('Please input your gender:')
if girl_gender == 'female':
    girl_age = int(input('Please input your age :'))
    if girl_age < 18 :
        print('不接受未成年')
    elif girl_age >= 18 and girl_age <=25:
        print('心动表白')
    elif girl_age > 25 and girl_age <= 45:
        print('阿姨好')
    else:
        print('奶奶好')
else:
    print('输入错误，再见')

预习while循环，打印1-100之间的奇数和

count = 1
sum_count = 0
while count < 100:
    sum_count += count
    count += 2
print(sum_count)

预习while循环，猜年龄游戏升级版，有以下三点要求：
1. 允许用户最多尝试3次
2. 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
3. 如果猜对了，就直接退出

age = 18
count = 0
while count <4:
   in_age = int(input('please input the age :'))
   if in_age == age:
       print('you are right')
       break
   elif in_age < age:
       print('猜小了')
   elif in_age > age:
       print('猜大了')
   count += 1
   count1 = 3 - count
   print('你还有%s次机会'%(count1))
   if count == 3:
       again = input('还想玩吗？想玩请输入Y，退出请输入N:')
       if again == 'Y':
           count = 0
       else:
           print('再见')
           break

题目：企业发放的奖金根据利润提成。利润(I)低于或等于10万元时，奖金可提10%；利润高于10万元，低于20万元时，低于10万元的部分按10%提成，高于10万元的部分，可提成7.5%；20万到40万之间时，高于20万元的部分，可提成5%；高于40万元的部分，可提成3%。从键盘输入当月利润，求应发放奖金总数？

award = 0
profit = float(input('Please input the total profit（单位：万）:'))
if profit <= 10:
    award = profit*0.1
elif profit > 10 and profit <= 20:
    award = (profit-10)*0.075+1
elif profit > 20 and profit <= 40:
    award = (profit-20)*0.05+1+0.75
elif profit >40:
    award = (profit-40)*0.03+1+0.75+1
print(award)

快递运费首重6元，超过则加收3元/kg(首重为1kg，不满则按1kg计算)，要求输入货物重量，计算运费

pay = 0
weight = float(input('请输入货物重量（KG）:'))
if weight <= 1:
    pay = 6
elif weight >1:
    weight1 = int(weight)
    print(weight1)
    if weight-weight1>0:
        pay = weight1*3+6
    else :
        pay = (weight1-1)*3+6
print(pay)

输入税前工资数，计算出应交的个人所得税（不考虑税费减免政策）

salary = float(input('请输入你的工资:'))
tax = 0
if salary  <=5000:
    tax = 0
elif salary > 5000 and salary <= 8000:
    tax = (salary - 5000)*0.03
elif salary > 8000 and salary <= 17000:
    tax = (salary-8000)*0.1+90
elif salary > 17000 and salary <= 30000:
    tax = (salary-17000)*0.2+90+900
elif salary > 30000 and salary <= 40000:
    tax = (salary-30000)*0.25+90+900+2600
elif salary > 40000 and salary <= 60000:
    tax = (salary-40000)*0.3+90+900+2600+2500
elif salary > 60000 and salary <= 85000:
    tax = (salary-60000)*0.35+90+900+2600+2500+6000
elif salary > 85000:
    tax = (salary-85000)*0.45+90+900+2500+2600+6000+15000*0.35
print('你应交的个人所得税为：%s'%(tax))

一个球从100米高度自由落下，每次落地后弹回原来高度的一半，求它在第10次落地时，离地多高，共经过多少米？
```
high1 = 100
n = 1
sum_high = 0
while n<=9 :
    sum_high += high1
    high1 = high1/2
    n+=1
print('sum_high:%s'%(sum_high))
print(high1)
```

有一个分数数列，1/2,2/3,4/4,8/5,16/6...，求前10项的和

  ```python
  sum_count  = 0
  n = 1
  while n<=10:
      sum_count1 = (n**2)/(n+1)
      sum_count +=sum_count1
      n+=1
  print(sum_count)
  ```

猴子吃桃问题：猴子第一天摘下若干个桃子，当即吃了一半，第二天早上又将剩下的桃子吃掉一半。以后每天早上都吃前一天剩下的一半。到第10天早上想再吃时，见只剩下一个桃子了。求第一天共摘多少个桃子
```
 ```python
 n = 1
 i=1
 while n<= 9:
     i = 2*i
     n+=1
 print(i)
 
 ```
```