第二章 当型循环理财

代码：

import pdb
money=50000
rate=[0.0325,0.03,0.03,0.02,0.0175]
for i in rate:
    money=round(money+money*i,2)
print("Five years later,your wealth is:",money,"yuan")

money1=100000
year=0
while money1>0:
    money1=round(money1*(1+0.037),2)-20000
    year+=1
    pdb.set_trace()
print(year,"year's later,wealth is taken out")

　　

效果：

Five years later,your wealth is: 56841.97 yuan
> /me/textbook/chapter/2/p37_2_3_wealth.py(10)<module>()
-> while money1>0:
(Pdb) p money1,year
(83700.0, 1)
(Pdb) c
> /me/textbook/chapter/2/p37_2_3_wealth.py(10)<module>()
-> while money1>0:
(Pdb) p money1,year
(66796.9, 2)
(Pdb) c
> /me/textbook/chapter/2/p37_2_3_wealth.py(10)<module>()
-> while money1>0:
(Pdb) p money1,year
(49268.39, 3)
(Pdb) c
> /me/textbook/chapter/2/p37_2_3_wealth.py(10)<module>()
-> while money1>0:
(Pdb) p money1,year
(31091.32, 4)
(Pdb) c
> /me/textbook/chapter/2/p37_2_3_wealth.py(10)<module>()
-> while money1>0:
(Pdb) p money1,year
(12241.7, 5)
(Pdb) c
> /me/textbook/chapter/2/p37_2_3_wealth.py(10)<module>()
-> while money1>0:
(Pdb) p money1,year
(-7305.360000000001, 6)
(Pdb) c
6 year's later,wealth is taken out

　

总结：

1. 两位小数round(i,2)；
2. 取完理财产品，循环条件为money1>o；
3. import pdb,在循环体后面加入pdb_set_trace()，然后执行程序，在{pdb}提示符后面输入p,后面输入需要显示的变量，多个用逗号隔开，显示循环一次的变量值，然后按c继续循环。