问题描述
请帮忙...我的代码返回错误的输出。我尝试通过多种方式对其进行调试,但都无济于事。
-- 编码:utf-8 --
""" 创建于 2021 年 6 月 17 日星期四 14:56:19
编写一个程序,计算在 12 个月内还清信用卡余额所需的最低固定月供。 """
enter code here
balance = 320000
newbalance = balance
annualInterestRate = 0.2
monthlyInterestRate = annualInterestRate / 12
month = 0
Lower = balance / 12
Upper = (balance * (1+ monthlyInterestRate)**12)/12.0
monthlyPayment = 0.01
middle = (Lower + Upper)/2
while(month<=12):
middle = (Lower + Upper)/2
monthlyOutstanding = newbalance - middle
updatedBalance = monthlyOutstanding + (monthlyInterestRate*monthlyOutstanding)
newbalance = updatedBalance
month+=1
if newbalance < 0 and newbalance < -monthlyPayment:
Upper = middle
monthlyPayment+=0.01
newbalance = balance
if newbalance > 0 and newbalance > monthlyPayment:
Lower = middle
monthlyPayment+=0.01
newbalance = balance
else:
print('Lowest payment: ',str(round(middle,2)))
break
middle = (Lower + Upper)/2
解决方法
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