漸漸無趣。研究了下，最后不玩了，直接上工具。

def is_number(input_str):

??"""

??判斷輸入值是否是數(shù)字

??"""

??try:

????float(input_str)

????return True

??except ValueError:

????return False

def delete_student_by_id(students_list, id):

??"""

??根據(jù)id刪除學(xué)生信息

??"""

??for i in range(len(students_list)):

????if students_list[i]["id"] == id:

??????del students_list[i]

??????return students_list

??print("輸入的id不存在")

??return students_list

# Example usage:

id_to_delete = input("請輸入需要?jiǎng)h除的學(xué)生id: ")

if is_number(id_to_delete):

??id_to_delete = int(id_to_delete)

??students_list = delete_student_by_id(students_list, id_to_delete)

else:

??print("輸入值不是數(shù)字")