学生信息管理系统python代码

python
class Student:
    def __init__(self, name, age, grade):
        self.name = name
        self.age = age
        self.grade = grade

class StudentManager:
    def __init__(self):
        self.students = []

    def add_student(self, name, age, grade):
        student = Student(name, age, grade)
        self.students.append(student)

    def find_student(self, name):
        for student in self.students:
            if student.name == name:
                return student
        return None

    def remove_student(self, name):
        student = self.find_student(name)
        if student:
            self.students.remove(student)
            print(f"Student {name} removed successfully.")
        else:
            print(f"Student {name} not found.")

    def list_students(self):
        print("List of Students:")
        for student in self.students:
            print(f"Name: {student.name}, Age: {student.age}, Grade: {student.grade}")

def main():
    student_manager = StudentManager()

    while True:
        print("\nStudent Management System")
        print("1. Add Student")
        print("2. Find Student")
        print("3. Remove Student")
        print("4. List Students")
        print("5. Quit")

        choice = input("Enter your choice: ")

        if choice == '1':
            name = input("Enter student's name: ")
            age = input("Enter student's age: ")
            grade = input("Enter student's grade: ")
            student_manager.add_student(name, age, grade)
        elif choice == '2':
            name = input("Enter student's name to find: ")
            student = student_manager.find_student(name)
            if student:
                print(f"Student found - Name: {student.name}, Age: {student.age}, Grade: {student.grade}")
            else:
                print("Student not found.")
        elif choice == '3':
            name = input("Enter student's name to remove: ")
            student_manager.remove_student(name)
        elif choice == '4':
            student_manager.list_students()
        elif choice == '5':
            print("Exiting...")
            break
        else:
            print("Invalid choice. Please try again.")

if __name__ == "__main__":
    main()

这个程序包含两个类：Student 和 StudentManager。Student 类表示一个学生对象，而 StudentManager 类包含对学生对象的管理方法，如添加、查找、删除和列出。

在 main 函数中，程序提供一个简单的文本菜单，让用户选择要执行的操作。根据用户的选择，程序调用相应的方法来处理学生信息。

python
class Student:
    def __init__(self, name, age, grade):
        self.name = name
        self.age = age
        self.grade = grade

class StudentManager:
    def __init__(self):
        self.students = []

    def add_student(self, name, age, grade):
        student = Student(name, age, grade)
        self.students.append(student)

    def find_student(self, name):
        for student in self.students:
            if student.name == name:
                return student
        return None

    def remove_student(self, name):
        student = self.find_student(name)
        if student:
            self.students.remove(student)
            print(f"Student {name} removed successfully.")
        else:
            print(f"Student {name} not found.")

    def list_students(self):
        print("List of Students:")
        for student in self.students:
            print(f"Name: {student.name}, Age: {student.age}, Grade: {student.grade}")

def main():
    student_manager = StudentManager()

    while True:
        print("\nStudent Management System")
        print("1. Add Student")
        print("2. Find Student")
        print("3. Remove Student")
        print("4. List Students")
        print("5. Quit")

        choice = input("Enter your choice: ")

        if choice == '1':
            name = input("Enter student's name: ")
            age = input("Enter student's age: ")
            grade = input("Enter student's grade: ")
            try:
                age = int(age)
                student_manager.add_student(name, age, grade)
            except ValueError:
                print("Age must be a valid integer.")
        elif choice == '2':
            name = input("Enter student's name to find: ")
            student = student_manager.find_student(name)
            if student:
                print(f"Student found - Name: {student.name}, Age: {student.age}, Grade: {student.grade}")
            else:
                print("Student not found.")
        elif choice == '3':
            name = input("Enter student's name to remove: ")
            student_manager.remove_student(name)
        elif choice == '4':
            student_manager.list_students()
        elif choice == '5':
            print("Exiting...")
            break
        else:
            print("Invalid choice. Please try again.")

if __name__ == "__main__":
    main()

在这个补充部分中，我们使用了 try-except 结构来捕获用户输入的年龄是否为整数的异常，并给出相应的提示信息。这样可以确保用户输入的年龄是一个有效的整数。