为什么 python 在 if 中从 else 写代码？

Question

我有这个 python 源代码：

while True:
    answer = input("\nApple or Nokia?")
    if answer == 'Apple':
        print("Nice, you have Apple!")

    if answer == 'Nokia':
        print("Nice, you have Nokia!")

    else:
        print("I do not understand.")

但是当我运行它并编写 Apple 时，python 说：

Apple or Nokia?Apple
Nice, you have Apple!
I do not understand.

Apple or Nokia?

我不知道为什么 python 会写“我不明白”。

Answer 1

你有错字：

if answer == 'Nokia':

应该

elif answer == 'Nokia':

您的原始代码相当于

while True:
    answer = input("\nApple or Nokia?")
    if answer == 'Apple':
        print("Nice, you have Apple!")
    else:
        pass  # do nothing

    if answer == 'Nokia':
        print("Nice, you have Nokia!")

    else:
        print("I do not understand.")