Question

我刚刚开始使用Python，我编写了这个小程序，它应该接受用户输入并打印结果。但是，我不了解运行时发生的错误：

代码：

# The purpose of this program is to use the user's input (the price of their meal), and outputs a receipt telling them how much the meal costs with tax and an optional tip.

print("Thank you for coming! We hoped you enjoyed the meal. Please use our all new PythonBillPayer! A fast way to pay for your day!")

PriceOfMeal = float(input("Please enter the price of your meal"))
TipAmount = float(input("Please enter amount of tip you would like to give"))

def receiptCalculation(PriceOfMeal, TipAmount):
    NewPrice = (((((13/100)*PriceOfMeal)) + PriceOfMeal) + TipAmount)
    return NewPrice

print(receiptCalculation(PriceOfMeal))

错误消息：

builtins.TypeError: receiptCalculation() missing 1 required positional argument: 'TipAmount'

Answer 1

方法receiptCalculation需要参数：PriceOfMeal 和 TipAmount。 receiptCalculation(PriceOfMeal)只向该方法传递一个参数，因此会引发错误。

Answer 2

receiptCalculation 有两个参数，但在线：

print(receiptCalculation(PriceOfMeal))

只给出了一个论点。所以解释器告诉你，你在函数调用中只缺少一个参数。

我不明白这个错误信息（Python）

2 个答案: