Python3语法错误

Question

我已经在这几个小时,搜索问题,甚至问我的兄弟,他是EE的高级,甚至他很难过.这是针对今晚午夜之前到期的项目,我似乎无法摆脱这个错误.任何人都可以看看我的代码,并弄清楚为什么我一直收到这个错误？谢谢,是的,它们在while语句下正确缩进.

# Initialize Variables
count = 0

#First Customer Input
cus = input("Enter customer's name: ")
custype = input("Enter customer's service type (R for Residential. B for Business): ")
location = input("Enter customer's service location (C for City. P for Parish): ")
kwh = eval(input("Enter customer's number of Kilowatt Hours Used: ")

#Repeat loop based on input items NOT being the sentinel value
while (count < 10):
    if custype == 'R' and location1 == 'C':
        rate = residentialCity
    elif custype == 'R' and location1 == 'P':
        rate = residentialParish
    elif custype == 'B' and location1 == 'C' or 'P':
        rate = business

Answer 1

kwh = eval(input("Enter customer's number of Kilowatt Hours Used: ")

算括号.

正如D.Shawley在评论中指出的那样,将用户输入传递给eval可以做任意不好的事情.你为什么eval还在那里用？