Python学生管理系统

好的，一个简单的Python学生管理系统可以包括以下功能：

1. 添加学生信息：包括学号、姓名、性别、年龄、联系方式等。

2. 查找学生信息：可以按学号或姓名进行查找，查找到学生信息后可以进行修改或删除操作。

3. 显示所有学生信息：将所有学生的信息以表格形式呈现出来。

4. 统计学生信息：可以统计学生总人数、男女比例、年龄分布等。

下面是一个简单的实现示例：

class Student:
    def __init__(self, id, name, gender, age, phone):
        self.id = id
        self.name = name
        self.gender = gender
        self.age = age
        self.phone = phone

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

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

    def find_student_by_id(self, id):
        for student in self.students:
            if student.id == id:
                return student
        return None

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

    def modify_student(self, student):
        old_student = self.find_student_by_id(student.id)
        if old_student:
            old_student.name = student.name
            old_student.gender = student.gender
            old_student.age = student.age
            old_student.phone = student.phone

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

    def show_all_students(self):
        print("学号\t姓名\t性别\t年龄\t联系方式")
        for student in self.students:
            print("{0}\t{1}\t{2}\t{3}\t{4}".format(student.id, student.name, student.gender, student.age, student.phone))

    def count_students(self):
        total = len(self.students)
        male = len([student for student in self.students if student.gender == "男"])
        female = total - male
        ages = [student.age for student in self.students]
        age_distribution = {}
        for age in ages:
            if age in age_distribution:
                age_distribution[age] += 1
            else:
                age_distribution[age] = 1
        return {
            "总人数": total,
            "男生人数": male,
            "女生人数": female,
            "年龄分布": age_distribution
        }

使用示例：

manager = StudentManager()

# 添加学生信息
s1 = Student("001", "张三", "男", 18, "123456789")
manager.add_student(s1)

s2 = Student("002", "李四", "女", 20, "987654321")
manager.add_student(s2)

# 查找学生信息并修改
s = manager.find_student_by_id("001")
if s:
    s.name = "王五"
    manager.modify_student(s)

# 查找学生信息并删除
s = manager.find_student_by_name("李四")
if s:
    manager.delete_student(s)

# 显示所有学生信息
manager.show_all_students()

# 统计学生信息
count_result = manager.count_students()
print(count_result)