python：实现学生通讯录

好的，我可以为您提供一个基本的Python学生通讯录实现，您可以根据自己的需求进行修改和扩展。

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

    def __str__(self):
        return f"{self.name} ({self.age}), {self.phone_number}"

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

    def add_student(self, student):
        self.students.append(student)

    def remove_student(self, student):
        self.students.remove(student)

    def search_by_name(self, name):
        matches = []
        for student in self.students:
            if student.name.lower() == name.lower():
                matches.append(student)
        return matches

    def search_by_age(self, age):
        matches = []
        for student in self.students:
            if student.age == age:
                matches.append(student)
        return matches

    def search_by_phone_number(self, phone_number):
        matches = []
        for student in self.students:
            if student.phone_number == phone_number:
                matches.append(student)
        return matches

    def print_directory(self):
        for student in self.students:
            print(student)

# Example usage:
directory = StudentDirectory()
directory.add_student(Student("Alice", 18, "123-456-7890"))
directory.add_student(Student("Bob", 19, "234-567-8901"))

print("All students:")
directory.print_directory()

print("\nStudents named Alice:")
for student in directory.search_by_name("Alice"):
    print(student)

print("\nStudents aged 18:")
for student in directory.search_by_age(18):
    print(student)

print("\nStudents with phone number 234-567-8901:")
for student in directory.search_by_phone_number("234-567-8901"):
    print(student)

在上面的代码中，我们定义了两个类：`Student` 和 `StudentDirectory`。每个 `Student` 对象代表一个学生，包含姓名、年龄和电话号码等信息。`StudentDirectory` 对象代表整个学生通讯录，提供添加、删除和搜索学生等操作。

您可以根据自己的需求扩展这个基本实现。例如，您可以添加更多的学生信息字段，或者增加其他的操作（例如按照成绩排序、导出到文件等）。