Question

所以我有以下代码：

python setup.py install

这给了我错误“ TypeError：'str'对象不可调用”。我该如何解决？

Answer 1

我认为这行

final_topping(final_toppings)

应该是

final_toppings.append(final_topping)

另外，print的返回值为None，因此final_result将为None。

Answer 2

我将final_toppings替换为final_toppings_list，这样更清楚了：

import random

pizza_toppings = ["bacon", "cheese", "chicken", "pepperoni", "olives"]
pizza_sauce = ["alfredo", "marinara", "ranch", "BBQ"]

def pizza(number_of_toppings):
  final_sauce = random.choice(pizza_sauce)
  final_toppings_list = []
  for i in range(number_of_toppings):
    final_topping = random.choice(pizza_toppings)
    final_toppings_list.append(final_topping)
  final_result = "Your pizza with ", final_toppings_list, " with ", final_sauce, " is ready I guess..."
  return final_result
print(pizza(2))

Answer 3

这是因为您正在使用字符串final_topping作为函数。只需删除该行就可以了。

Answer 4

如果您只想使用final_topping列表中的一个元素（在final_toppings之后），则不必将pizza_toppings附加到final_result列表中。

我注释了脚本中的两行，并使用python f-strings以方便的方式格式化final_result。

import random


pizza_toppings = ["bacon", "cheese", "chicken", "pepperoni", "olives"]
pizza_sauce = ["alfredo", "marinara", "ranch", "BBQ"]


def pizza(number_of_toppings):
    final_sauce = random.choice(pizza_sauce)
    #final_toppings = []

    for i in range(number_of_toppings):
        final_topping = random.choice(pizza_toppings)
        #final_toppings.append(final_topping)

    final_result = (
        f"Your pizza with {final_topping} "
        f"and {final_sauce} is ready I guess..."
    )

    return final_result


print(pizza(2))

我有一个python TypeError，我不知道如何解决它

4 个答案: