類型錯誤：浮動不可回叫

Question

該代碼只是給出貸款支付的月數。

import sys 

loanAmt = input("enter the amount of loan you want : ") 
r = input("enter the rate of interest : ") 
numOfPayments = input("enter number of payments : ") 
month = loanAmt (r * (1+numOfPayments)/((1+r) * (numOfPayments-1))) 

print(month) 

錯誤：

TypeError: 'float object is not callable ' 

Answer 1

loanAmt是浮動的，你試圖把它叫做：

month = loanAmt (...) 

也許你想乘該值通過的結果括號表達？如果是這樣，你缺少一個*：

month = loanAmt * (...) 

全行則應該是：

month = loanAmt * (r * (1 + numOfPayments)/((1 + r) * (numOfPayments - 1)))