Question

def userinput():
    amount_purchased = input('Enter the amount of bags to be purchased: ')

#The amount entered is compared and the rate of discount is printed
def find_discount(amount_purchased):
    amount_purchased = userinput()
    if amount_purchased <=25:
        discount_rate=0.0
        print('The discount rate is 0%')
    elif amount_purchased <=50:
        discount_rate=0.05
        print('The discount rate is 5%')
    elif amount_purchased <=99:
        discount_rate=0.1
        print('The discount rate is 10%')
        print('The discount rate is 10%')

嗨，我在尝试从'userinput'获取值时出现问题功能找到折扣。如果我让userinput成为一个全局变量，我可以让它工作，但我想把它放在一个函数中，这样我就可以改变它出现的顺序在该计划中。

Answer 1

您需要从函数中返回值：

def userinput():
    amount_purchased = input('Enter the amount of bags to be purchased: ')
    return amount_purchased

也可以直接返回input()的结果：

def userinput():
    return input('Enter the amount of bags to be purchased: ')

另外：为什么find_discount会收到amount_purchased作为参数？在我看来，amount_purchased将从任何userinput返回中获得其价值。

Answer 2

您需要从userinput返回值，并可能转换为int

def userinput():
    return int(input('Enter the amount of bags to be purchased: '))

Answer 3

您应该从用户输入函数返回值所以将你的功能改为：

def userinput():
        amount_purchased = input("Enter the amount of bags to be purchased: ")
        return amount_purchased

祝你好运

将值从输入导入到另一个函数

3 个答案: