M=L[i（1+i）k]/[（1+i）k1]语法错误：无效语法

Question

贷款计算器

M = 0

L = raw_input("What is the loan amount you took? ")

i = raw_input("What is the interest for the loan amount? ")

k = raw_input("No of payments or years you are considering for this loan? ")

M = L[i(1+i)k] / [(1+i)k-1]

print("Your monthly payment is %f" %M) 

错误：

M = L[i(1+i)k] / [(1+i)k-1]
            ^
SyntaxError: invalid syntax

Answer 1

无论您的输入是字符串还是数字，对于python中的乘法，您必须指定值之间的*。你知道吗

如果希望输入仅为数字，则应使用input()，或者将raw_input()转换为int作为int(raw_input())

为什么你没有在

L[i(1+i)k] / [(1+i)k-1]  
   ^

是因为python认为i(1+i)是一个函数调用。你知道吗