For loop僅增加兩個變量中的一個

Question

我希望結果顯示每年增加利息後的總金額，但僅增加年份但不增加金額。爲什麼？

while True: 
    try: 
     investment = float(input('How much to invest : ')) 
     interest = float(input('Interest rate : ')) 
     break 
    except ValueError: 
     "Please enter a valid number" 

for year in range(10): 
    money = investment + (investment * interest) 
    print("Total money in year {} : {}".format((year+1), money)) 

Answer 1

這聽起來像你需要累積的利息：

for year in range(10): 
    investment += (investment * interest) 
    print("Total money in year {} : {}".format((year + 1), investment)) 

Answer 2

邏輯錯誤。您的investment變量不會在循環中每輪分配一次。