PYTHON语法错误无效？

Question

当我尝试运行此程序时，我不断收到“无效语法”消息。在“其他”声明之后，它突出显示红色的“年龄”。我不确定我做错了什么。

age = float(input('How old are you? '))
citizen = float(input('How long have you been an American citizen? '))
if age >= 30 and citizen >= 9:
    print('You are eligible to become a US Senator and a House Representative!')
else age < 30 >= 25 and citizen < 9 >= 7:
    print('You are only eligible to become a House Representative.')
if age < 25 or citizen < 7:
    print('You are not eligible to become a US Senator or a House Represenatative.')

Answer 1

else age < 30 >= 25 and citizen < 9 >= 7:

是语法错误。在:声明之后，您不能拥有else以外的任何内容。

也许你想要一个elif条款 ¹ ？

elif 30 > age >= 25 and 9 > citizen >= 7:
    ...

^{1 请注意，我还需要稍微切换一下你的值来理解你正在做的操作符链接......}

Answer 2

else中的else age < 30 >= 25 and citizen < 9 >= 7:应更改为elif。