PYTHON語法錯誤嗎？

Question

當我嘗試運行該程序時，我不斷收到“無效語法”消息。 在“ else”語句之后，它以紅色突出顯示“ age”。 我不確定自己做錯了什么。

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:

是語法錯誤。 在else語句之后，除了:之外，您不能有其他任何else 。

也許您想要一個elif子句¹ ？

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

^{1請注意，我還必須稍微改變一下您的值，以了解您正在執行的運算符鏈接...}

Answer 2

else age < 30 >= 25 and citizen < 9 >= 7:的else應當更改為elif 。