在控制台中运行 python 简单代码时遇到问题 [英] Having trouble with python simple code running in console

问题描述

我运行了这段代码.然后它在控制台中显示了以下内容.

I ran this code.Then it displayed the follwing in the console.

回溯(最近一次调用最后一次):文件"，第 13 行，在 NameError 中:名称 'r' 未定义

Traceback (most recent call last): File "", line 13, in NameError: name 'r' is not defined

import math

p = int(raw_input("Please enter deposit amount: \n"))
i = int(raw_input("Please input interest rate: \n"))
t = int(raw_input("Please insert number of years of the invesment: \n"))
interest = raw_input("Do you want a simple or compound interest ? \n")

A = p(1+r*t)
B = p(1+r)^t

if interest == "simple":
    print int(float(A))
elif interest == "compound":
    print int(float(B))

推荐答案

有多个错误和缩进问题；我评论他们哪里出错了:

There were multiple errors and indentation problem ;I commented them where you made mistakes:

p = int(raw_input("Please enter deposit amount: \n"))
r = int(raw_input("Please input interest rate: \n")) #rename i to r
t = int(raw_input("Please insert number of years of the investment: \n"))
interest = raw_input("Do you want a simple or compound interest ? \n")

A = p*(1+r*t) #multiply p with ()
B = p*(1+r)**t #same as B

 #** is power

if interest == "simple":
    print (float(A)) # you dont need to cast the float again to int
else: #since there is no other conditions it's obvious to print compound 
    print(float(B))# you dont need to cast the float again to int

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