习题8.9

1.代码实现

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def calculate_monthly_payment(P, r, n):#p:贷款总额，r:月利率，n：还款期数
    monthly_payment = P * (r * (1 + r) ** n) / ((1 + r) ** n - 1)
    return monthly_payment
total_price = 600000  
down_payment = 200000  
loan_amount = total_price - down_payment 
annual_interest_rate = 0.0036 
loan_term = 30 * 12 

# 计算每月还款额
monthly_payment = calculate_monthly_payment(loan_amount, annual_interest_rate / 12, loan_term)
print(f"每月还款额为：{monthly_payment:.2f}元")
print("学号：3014")

2.运行结果